{"id":18238,"date":"2026-06-03T00:25:27","date_gmt":"2026-06-03T08:25:27","guid":{"rendered":"https:\/\/toknavgnss.com\/?p=18238"},"modified":"2026-06-17T19:59:23","modified_gmt":"2026-06-18T03:59:23","slug":"best-echo-sounder-river-surveying","status":"publish","type":"post","link":"https:\/\/toknavgnss.com\/fr\/best-echo-sounder-river-surveying\/","title":{"rendered":"Le meilleur \u00e9chosondeur pour les lev\u00e9s fluviaux : Guide pratique des lev\u00e9s hydrographiques"},"content":{"rendered":"<div data-elementor-type=\"wp-post\" data-elementor-id=\"18238\" class=\"elementor elementor-18238\" data-elementor-post-type=\"post\">\n\t\t\t\t<div class=\"elementor-element elementor-element-788d7a25 e-con-full e-flex wpr-particle-no wpr-jarallax-no wpr-parallax-no wpr-sticky-section-no wpr-column-slider-no wpr-equal-height-no e-con e-parent\" data-id=\"788d7a25\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t<div class=\"elementor-element elementor-element-731ef010 e-con-full e-flex wpr-particle-no wpr-jarallax-no wpr-parallax-no wpr-sticky-section-no wpr-column-slider-no wpr-equal-height-no e-con e-child\" data-id=\"731ef010\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t<div class=\"elementor-element elementor-element-6dfa6cd0 e-con-full e-flex wpr-particle-no wpr-jarallax-no wpr-parallax-no wpr-sticky-section-no wpr-column-slider-no wpr-equal-height-no e-con e-child\" data-id=\"6dfa6cd0\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t<div class=\"elementor-element elementor-element-2c19d199 elementor-widget elementor-widget-hfe-breadcrumbs-widget\" data-id=\"2c19d199\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"hfe-breadcrumbs-widget.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<nav aria-label=\"Fil d&#039;Ariane\"><ul class=\"hfe-breadcrumbs hfe-breadcrumbs-show-home\"><li class=\"hfe-breadcrumbs-item hfe-breadcrumbs-first\"><span class=\"hfe-breadcrumbs-home-icon\"><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-home\" viewbox=\"0 0 576 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M280.37 148.26L96 300.11V464a16 16 0 0 0 16 16l112.06-.29a16 16 0 0 0 15.92-16V368a16 16 0 0 1 16-16h64a16 16 0 0 1 16 16v95.64a16 16 0 0 0 16 16.05L464 480a16 16 0 0 0 16-16V300L295.67 148.26a12.19 12.19 0 0 0-15.3 0zM571.6 251.47L488 182.56V44.05a12 12 0 0 0-12-12h-56a12 12 0 0 0-12 12v72.61L318.47 43a48 48 0 0 0-61 0L4.34 251.47a12 12 0 0 0-1.6 16.9l25.5 31A12 12 0 0 0 45.15 301l235.22-193.74a12.19 12.19 0 0 1 15.3 0L530.9 301a12 12 0 0 0 16.9-1.6l25.5-31a12 12 0 0 0-1.7-16.93z\"><\/path><\/svg><\/span><a href=\"https:\/\/toknavgnss.com\/fr\"><span class=\"hfe-breadcrumbs-text\">Accueil<\/span><\/a><\/li><\/ul><\/nav>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-6d4935ca e-flex e-con-boxed wpr-particle-no wpr-jarallax-no wpr-parallax-no wpr-sticky-section-no wpr-column-slider-no wpr-equal-height-no e-con e-parent\" data-id=\"6d4935ca\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t<div class=\"elementor-element elementor-element-329ea64a e-con-full e-flex wpr-particle-no wpr-jarallax-no wpr-parallax-no wpr-sticky-section-no wpr-column-slider-no wpr-equal-height-no e-con e-child\" data-id=\"329ea64a\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-7929940e elementor-widget__width-initial elementor-widget elementor-widget-heading\" data-id=\"7929940e\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h1 class=\"elementor-heading-title elementor-size-default\">Le meilleur \u00e9chosondeur pour les lev\u00e9s fluviaux : Guide pratique des lev\u00e9s hydrographiques<\/h1>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-5ef34a31 e-con-full e-flex wpr-particle-no wpr-jarallax-no wpr-parallax-no wpr-sticky-section-no wpr-column-slider-no wpr-equal-height-no e-con e-child\" data-id=\"5ef34a31\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-5cb28a05 elementor-view-default elementor-widget elementor-widget-icon\" data-id=\"5cb28a05\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"icon.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-icon-wrapper\">\n\t\t\t<div class=\"elementor-icon\">\n\t\t\t<svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-calendar-alt\" viewbox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M0 464c0 26.5 21.5 48 48 48h352c26.5 0 48-21.5 48-48V192H0v272zm320-196c0-6.6 5.4-12 12-12h40c6.6 0 12 5.4 12 12v40c0 6.6-5.4 12-12 12h-40c-6.6 0-12-5.4-12-12v-40zm0 128c0-6.6 5.4-12 12-12h40c6.6 0 12 5.4 12 12v40c0 6.6-5.4 12-12 12h-40c-6.6 0-12-5.4-12-12v-40zM192 268c0-6.6 5.4-12 12-12h40c6.6 0 12 5.4 12 12v40c0 6.6-5.4 12-12 12h-40c-6.6 0-12-5.4-12-12v-40zm0 128c0-6.6 5.4-12 12-12h40c6.6 0 12 5.4 12 12v40c0 6.6-5.4 12-12 12h-40c-6.6 0-12-5.4-12-12v-40zM64 268c0-6.6 5.4-12 12-12h40c6.6 0 12 5.4 12 12v40c0 6.6-5.4 12-12 12H76c-6.6 0-12-5.4-12-12v-40zm0 128c0-6.6 5.4-12 12-12h40c6.6 0 12 5.4 12 12v40c0 6.6-5.4 12-12 12H76c-6.6 0-12-5.4-12-12v-40zM400 64h-48V16c0-8.8-7.2-16-16-16h-32c-8.8 0-16 7.2-16 16v48H160V16c0-8.8-7.2-16-16-16h-32c-8.8 0-16 7.2-16 16v48H48C21.5 64 0 85.5 0 112v48h448v-48c0-26.5-21.5-48-48-48z\"><\/path><\/svg>\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-1369eafa elementor-widget elementor-widget-text-editor\" data-id=\"1369eafa\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>2026-06-03<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-508d50b1 e-con-full e-flex wpr-particle-no wpr-jarallax-no wpr-parallax-no wpr-sticky-section-no wpr-column-slider-no wpr-equal-height-no e-con e-child\" data-id=\"508d50b1\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-e070b62 elementor-widget elementor-widget-heading\" data-id=\"e070b62\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">1. Aper\u00e7u rapide : pourquoi les \u00e9chosondeurs sont-ils essentiels aux lev\u00e9s hydrographiques fluviaux ?<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-712187ea elementor-widget__width-initial elementor-widget elementor-widget-text-editor\" data-id=\"712187ea\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"desc\"><div class=\"desc\"><p>At Toknav, we know echo sounders are the primary depth-sensing tool in hydrographic surveys, especially for riverbed mapping. In this guide, we break down the latest survey-grade models.<\/p><p>We also discuss practical workflows for river surveying. We\u2019ve built a detailed spec comparison table, picked the top 3 echo sounders for river use, and explained how your choice impacts survey accuracy and efficiency.<\/p><p>We\u2019ve added clear links and CTAs to help you explore our USV and support services for turnkey solutions.<\/p><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-370b46e5 e-con-full e-flex wpr-particle-no wpr-jarallax-no wpr-parallax-no wpr-sticky-section-no wpr-column-slider-no wpr-equal-height-no e-con e-child\" data-id=\"370b46e5\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t<div class=\"elementor-element elementor-element-7d54f551 elementor-widget elementor-widget-text-editor\" data-id=\"7d54f551\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Sondeur professionnel destin\u00e9 aux lev\u00e9s fluviaux et aux lev\u00e9s hydrographiques sur le terrain<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-6cea54a6 e-con-full e-flex wpr-particle-no wpr-jarallax-no wpr-parallax-no wpr-sticky-section-no wpr-column-slider-no wpr-equal-height-no e-con e-child\" data-id=\"6cea54a6\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-75723c57 elementor-widget elementor-widget-text-editor\" data-id=\"75723c57\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"desc\"><div class=\"desc\"><p>Hydrographic surveying maps underwater depths, terrain, and hidden obstacles. This ensures navigation safety and supports waterway engineering projects.<\/p><p>Rivers and shallow waterways present tricky challenges, including vegetation, turbidity, and shifting depths. That\u2019s why high-frequency 200 kHz echo sounders are our go-to for precise shallow-water detection.<\/p><p>Le GPS int\u00e9gr\u00e9 et le positionnement RTK sont \u00e9galement indispensables. Ils associent chaque mesure de profondeur \u00e0 des coordonn\u00e9es g\u00e9ographiques pr\u00e9cises, garantissant ainsi des r\u00e9sultats cartographiques fiables.<\/p><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-4e4b5288 e-con-full e-flex wpr-particle-no wpr-jarallax-no wpr-parallax-no wpr-sticky-section-no wpr-column-slider-no wpr-equal-height-no e-con e-child\" data-id=\"4e4b5288\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-3fad4d17 elementor-widget elementor-widget-heading\" data-id=\"3fad4d17\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">2. Facteurs cl\u00e9s pour choisir un sondeur dans le cadre de lev\u00e9s fluviaux<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-4cb5c509 elementor-widget elementor-widget-text-editor\" data-id=\"4cb5c509\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"desc\"><div class=\"desc\"><p>Le choix d'un sondeur adapt\u00e9 est d\u00e9terminant pour garantir le bon d\u00e9roulement des travaux sur le terrain. Vous trouverez ci-dessous les crit\u00e8res essentiels que tout g\u00e9om\u00e8tre fluvial doit prendre en compte avant de faire son choix.<\/p><\/div><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-56b82b31 e-con-full e-flex wpr-particle-no wpr-jarallax-no wpr-parallax-no wpr-sticky-section-no wpr-column-slider-no wpr-equal-height-no e-con e-child\" data-id=\"56b82b31\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-462432ad elementor-widget elementor-widget-heading\" data-id=\"462432ad\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">2.1 Fr\u00e9quence et p\u00e9n\u00e9tration du signal<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-22458fb2 elementor-widget elementor-widget-text-editor\" data-id=\"22458fb2\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"desc\"><div class=\"desc\"><p>Les syst\u00e8mes \u00e0 haute fr\u00e9quence, autour de 200 kHz, offrent une grande pr\u00e9cision dans les eaux peu profondes des rivi\u00e8res. Les fr\u00e9quences plus basses (24\u201333 kHz) traversent mieux les eaux troubles, mais utilisent des faisceaux de signal plus larges.<\/p><p>Les sondeurs \u00e0 double fr\u00e9quence combinent ces deux atouts, vous permettant ainsi d'obtenir des donn\u00e9es pr\u00e9cises, que le cours d'eau soit limpide ou charg\u00e9 en s\u00e9diments et en turbidit\u00e9.<\/p><\/div><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-2609da1d e-con-full e-flex wpr-particle-no wpr-jarallax-no wpr-parallax-no wpr-sticky-section-no wpr-column-slider-no wpr-equal-height-no e-con e-child\" data-id=\"2609da1d\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-39c2c5b0 elementor-widget elementor-widget-heading\" data-id=\"39c2c5b0\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">2.2 Angle du faisceau<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-ea1d08f elementor-widget elementor-widget-text-editor\" data-id=\"ea1d08f\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"desc\"><div class=\"desc\"><p>Les faisceaux \u00e9troits (3 \u00e0 5\u00b0) permettent de capturer des d\u00e9tails spatiaux plus fins pour une cartographie pr\u00e9cise des cours d'eau. Les faisceaux plus larges (8 \u00e0 20\u00b0) couvrent une plus grande surface \u00e0 chaque impulsion, mais r\u00e9duisent le niveau de d\u00e9tail.<\/p><p>Par exemple, notre sondeur int\u00e9gr\u00e9 destin\u00e9 aux USV Tboat utilise un faisceau de 8\u00b0 \u00e0 200 kHz, offrant un \u00e9quilibre parfait entre une large couverture et des donn\u00e9es de lev\u00e9 pr\u00e9cises pour les voies navigables fluviales.<\/p><\/div><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-40cd59fb e-con-full e-flex wpr-particle-no wpr-jarallax-no wpr-parallax-no wpr-sticky-section-no wpr-column-slider-no wpr-equal-height-no e-con e-child\" data-id=\"40cd59fb\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-2f79e308 elementor-widget elementor-widget-heading\" data-id=\"2f79e308\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">2.3 Plage de profondeur<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-3090229a elementor-widget elementor-widget-text-editor\" data-id=\"3090229a\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"desc\"><div class=\"desc\"><p>La plupart des lev\u00e9s fluviaux ne n\u00e9cessitent qu'une plage de profondeur comprise entre 0 et 100 m. Cependant, les mod\u00e8les prenant en charge des profondeurs de 200 m ou plus offrent une grande flexibilit\u00e9 pour les chenaux fluviaux profonds.<\/p><p>Notre sondeur couvre une profondeur de 0,3 \u00e0 200 m, ce qui lui permet de fonctionner aussi bien dans les rivi\u00e8res peu profondes que dans les zones plus profondes sans qu'il soit n\u00e9cessaire de changer d'appareil.<\/p><\/div><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-4ecae7e8 e-con-full e-flex wpr-particle-no wpr-jarallax-no wpr-parallax-no wpr-sticky-section-no wpr-column-slider-no wpr-equal-height-no e-con e-child\" data-id=\"4ecae7e8\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-7736452c elementor-widget elementor-widget-heading\" data-id=\"7736452c\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">2.4 Pr\u00e9cision et r\u00e9solution<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-ff15445 elementor-widget elementor-widget-text-editor\" data-id=\"ff15445\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"desc\"><div class=\"desc\"><p>Les sondeurs professionnels de qualit\u00e9 topographique offrent une pr\u00e9cision de l'ordre du centim\u00e8tre. Notre mod\u00e8le offre une pr\u00e9cision de mesure de la profondeur de \u00b12 cm, garantissant ainsi des donn\u00e9es fluviales extr\u00eamement fiables.<\/p><p>La plupart des appareils modernes affichent une pr\u00e9cision de \u00b10,01 m ou 0,11 TP3T pour la profondeur mesur\u00e9e, avec des fr\u00e9quences d'\u00e9mission de 10 \u00e0 20 Hz qui am\u00e9liorent la densit\u00e9 des donn\u00e9es dans les environnements fluviaux \u00e0 courant rapide.<\/p><\/div><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-92e9918 e-con-full e-flex wpr-particle-no wpr-jarallax-no wpr-parallax-no wpr-sticky-section-no wpr-column-slider-no wpr-equal-height-no e-con e-child\" data-id=\"92e9918\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-03d178c elementor-widget elementor-widget-heading\" data-id=\"03d178c\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">2.5 Int\u00e9gration et interface<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-a34c5da elementor-widget elementor-widget-text-editor\" data-id=\"a34c5da\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"desc\"><div class=\"desc\"><p>Quality echo sounders support standard NMEA or Ethernet data output, like RS-232 and TCP\/IP. This allows for seamless connection with GNSS receivers and survey software.<\/p><p>All-in-one portable units that combine echo sounder and GNSS simplify setup. They are perfect for small survey boats working along narrow river sections.<\/p><p>Your echo sounder selection directly impacts final bathymetry results. A precise device delivers clear maps, while poor transducer choices can cause data errors or missing terrain features.<\/p><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-5befcb33 elementor-align-right elementor-widget elementor-widget-button\" data-id=\"5befcb33\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"elementor-button-wrapper\">\n\t\t\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-sm\" href=\"\/fr\/contact-us\/#contactus\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-button-text\">B\u00e9n\u00e9ficiez de conseils professionnels gratuits | Renseignez-vous sur le choix d'un sondeur<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-5d46fc38 e-con-full e-flex wpr-particle-no wpr-jarallax-no wpr-parallax-no wpr-sticky-section-no wpr-column-slider-no wpr-equal-height-no e-con e-child\" data-id=\"5d46fc38\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-1de9af69 elementor-widget elementor-widget-heading\" data-id=\"1de9af69\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">3. Comparaison des caract\u00e9ristiques techniques des sondeurs pour les lev\u00e9s fluviaux<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-725c5f93 elementor-widget elementor-widget-text-editor\" data-id=\"725c5f93\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"desc\"><div class=\"desc\"><p>Nous avons r\u00e9pertori\u00e9 ci-dessous, dans un tableau clair, les sondeurs de fond couramment utilis\u00e9s pour l'\u00e9tude des cours d'eau, avec des caract\u00e9ristiques techniques tir\u00e9es directement des fiches techniques officielles des produits, pour vous faciliter la consultation.<\/p><\/div><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-6a2db5ac e-con-full e-flex wpr-particle-no wpr-jarallax-no wpr-parallax-no wpr-sticky-section-no wpr-column-slider-no wpr-equal-height-no e-con e-child\" data-id=\"6a2db5ac\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t<div class=\"elementor-element elementor-element-6df1cd5a elementor-widget elementor-widget-text-editor\" data-id=\"6df1cd5a\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Principaux mod\u00e8les de sondeurs utilis\u00e9s pour les lev\u00e9s fluviaux et l'affichage des sp\u00e9cifications des lev\u00e9s hydrographiques<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-91720b3 e-con-full e-flex wpr-particle-no wpr-jarallax-no wpr-parallax-no wpr-sticky-section-no wpr-column-slider-no wpr-equal-height-no e-con e-child\" data-id=\"91720b3\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-0fa52dc e-con-full elementor-hidden-mobile e-flex wpr-particle-no wpr-jarallax-no wpr-parallax-no wpr-sticky-section-no wpr-column-slider-no wpr-equal-height-no e-con e-child\" data-id=\"0fa52dc\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t<div class=\"elementor-element elementor-element-e4745ce elementor-widget__width-initial elementor-widget elementor-widget-heading\" data-id=\"e4745ce\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"elementor-heading-title elementor-size-default\"><div>Mod\u00e8le<\/div><\/div>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-278c224 elementor-widget__width-initial elementor-widget elementor-widget-heading\" data-id=\"278c224\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"elementor-heading-title elementor-size-default\"><div>Fr\u00e9quence<\/div><\/div>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-e858cb3 elementor-widget__width-initial elementor-widget elementor-widget-heading\" data-id=\"e858cb3\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"elementor-heading-title elementor-size-default\"><div>Angle du faisceau<\/div><\/div>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-a1d3e5c elementor-widget__width-initial elementor-widget elementor-widget-heading\" data-id=\"a1d3e5c\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"elementor-heading-title elementor-size-default\"><div>Plage de profondeur<\/div><\/div>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-fcb7017 elementor-widget__width-initial elementor-widget elementor-widget-heading\" data-id=\"fcb7017\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"elementor-heading-title elementor-size-default\"><div>Pr\u00e9cision<\/div><\/div>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-86bdc3b elementor-widget__width-initial elementor-widget elementor-widget-heading\" data-id=\"86bdc3b\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"elementor-heading-title elementor-size-default\"><div>Interface<\/div><\/div>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-8835dc8 elementor-widget__width-initial elementor-widget elementor-widget-heading\" data-id=\"8835dc8\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"elementor-heading-title elementor-size-default\"><div>Cas d'utilisation id\u00e9al<\/div><\/div>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-a9f03dc e-con-full e-flex wpr-particle-no wpr-jarallax-no wpr-parallax-no wpr-sticky-section-no wpr-column-slider-no wpr-equal-height-no e-con e-child\" data-id=\"a9f03dc\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t<div class=\"elementor-element elementor-element-de8c227 elementor-widget__width-initial elementor-widget elementor-widget-text-editor\" data-id=\"de8c227\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>TSBES (sondeur \u00e0 faisceau unique)<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-d6f4f73 elementor-widget__width-initial elementor-widget elementor-widget-text-editor\" data-id=\"d6f4f73\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>200 kHz<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-40e1ba8 elementor-widget__width-initial elementor-widget elementor-widget-text-editor\" data-id=\"40e1ba8\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>8\u00b0\u00a0<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-3585eb5 elementor-widget__width-initial elementor-widget elementor-widget-text-editor\" data-id=\"3585eb5\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>0,5 m \u00e0 200 m<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-3431388 elementor-widget__width-initial elementor-widget elementor-widget-text-editor\" data-id=\"3431388\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>1 cm + 0,11 TP3Th<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-9a38d5c elementor-widget__width-initial elementor-widget elementor-widget-text-editor\" data-id=\"9a38d5c\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Lan, RS232 (bauds)<br \/>(9600-230 400)<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-7c9817d elementor-widget__width-initial elementor-widget elementor-widget-text-editor\" data-id=\"7c9817d\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Pour la cartographie des eaux peu profondes et l'hydrographie \u00e0 partir de petites embarcations.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-67b93c5 e-con-full e-flex wpr-particle-no wpr-jarallax-no wpr-parallax-no wpr-sticky-section-no wpr-column-slider-no wpr-equal-height-no e-con e-child\" data-id=\"67b93c5\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t<div class=\"elementor-element elementor-element-5e64d5a elementor-widget__width-initial elementor-widget elementor-widget-text-editor\" data-id=\"5e64d5a\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>TMBES (sondeur multifaisceaux avanc\u00e9)<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-4e481f5 elementor-widget__width-initial elementor-widget elementor-widget-text-editor\" data-id=\"4e481f5\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>400 kHz<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-dfc8e9e elementor-widget__width-initial elementor-widget elementor-widget-text-editor\" data-id=\"dfc8e9e\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>8\u00b0\u00a0<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-fc2034a elementor-widget__width-initial elementor-widget elementor-widget-text-editor\" data-id=\"fc2034a\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>0,2 m - 150 m<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-c8d1e49 elementor-widget__width-initial elementor-widget elementor-widget-text-editor\" data-id=\"c8d1e49\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>2 cm + 1 ppm (RTK)<br \/>0,6 m (SBAS) \/\/ 1,2 m (point unique)<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-33c4773 elementor-widget__width-initial elementor-widget elementor-widget-text-editor\" data-id=\"33c4773\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>RS-232<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-6a10615 elementor-widget__width-initial elementor-widget elementor-widget-text-editor\" data-id=\"6a10615\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Cartographie 3D haute r\u00e9solution en eaux peu profondes ; lev\u00e9s multifonctionnels, des cours d'eau aux zones c\u00f4ti\u00e8res.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-fa40030 e-con-full e-flex wpr-particle-no wpr-jarallax-no wpr-parallax-no wpr-sticky-section-no wpr-column-slider-no wpr-equal-height-no e-con e-child\" data-id=\"fa40030\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t<div class=\"elementor-element elementor-element-eba9799 elementor-widget__width-initial elementor-widget elementor-widget-text-editor\" data-id=\"eba9799\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>SDE (Sondeur portable \u00e0 double fr\u00e9quence)<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-04b3ac0 elementor-widget__width-initial elementor-widget elementor-widget-text-editor\" data-id=\"04b3ac0\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Normes 200 kHz et 20 kHz<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-efbf4c7 elementor-widget__width-initial elementor-widget elementor-widget-text-editor\" data-id=\"efbf4c7\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>200 kHz : 7\u00b0<br \/>20 kHz : 20\u00b0<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-65e9139 elementor-widget__width-initial elementor-widget elementor-widget-text-editor\" data-id=\"65e9139\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>200 kHz : 0,3 m \u00e0 200 m<\/p><p>20 kHz : 0,5 m \u00e0 600 m<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-e45f34c elementor-widget__width-initial elementor-widget elementor-widget-text-editor\" data-id=\"e45f34c\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>200 kHz : \u00b11 cm \u00b10,11 TP3TD<\/p><p>20 kHz : \u00b110 cm \u00b10,11 TP3TD<\/p><p>(D correspond \u00e0 la valeur de la profondeur)<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-6999736 elementor-widget__width-initial elementor-widget elementor-widget-text-editor\" data-id=\"6999736\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>3 ports RS232, 1 port RS485, 1 prise d'alimentation <br \/>interface d'alimentation, 1 transducteur <br \/>un port et un port LAN<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-c32321f elementor-widget__width-initial elementor-widget elementor-widget-text-editor\" data-id=\"c32321f\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Haute fr\u00e9quence pour la cartographie des fonds peu profonds et la mesure de l'\u00e9paisseur des s\u00e9diments ; basse fr\u00e9quence pour les cours d'eau et les eaux profondes.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-b4b4277 e-con-full elementor-hidden-desktop elementor-hidden-tablet e-flex wpr-particle-no wpr-jarallax-no wpr-parallax-no wpr-sticky-section-no wpr-column-slider-no wpr-equal-height-no e-con e-child\" data-id=\"b4b4277\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t<div class=\"elementor-element elementor-element-f505700 elementor-widget elementor-widget-image\" data-id=\"f505700\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"306\" src=\"https:\/\/toknavgnss.com\/wp-content\/uploads\/2026\/06\/USV\u914d\u4ef6-1024x306.png\" class=\"attachment-large size-large wp-image-18343\" alt=\"\" srcset=\"https:\/\/toknavgnss.com\/wp-content\/uploads\/2026\/06\/USV\u914d\u4ef6-1024x306.png 1024w, https:\/\/toknavgnss.com\/wp-content\/uploads\/2026\/06\/USV\u914d\u4ef6-300x90.png 300w, https:\/\/toknavgnss.com\/wp-content\/uploads\/2026\/06\/USV\u914d\u4ef6-768x229.png 768w, https:\/\/toknavgnss.com\/wp-content\/uploads\/2026\/06\/USV\u914d\u4ef6-18x5.png 18w, https:\/\/toknavgnss.com\/wp-content\/uploads\/2026\/06\/USV\u914d\u4ef6.png 1098w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-29c388a0 elementor-widget-tablet__width-initial elementor-widget elementor-widget-text-editor\" data-id=\"29c388a0\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"desc\"><div class=\"desc\"><p>Chaque mod\u00e8le pr\u00e9sente des atouts sp\u00e9cifiques adapt\u00e9s \u00e0 diff\u00e9rents types de missions d'\u00e9tude fluviale. \u00c9valuez les conditions sur le terrain et les outils dont vous disposez afin de choisir la solution la mieux adapt\u00e9e \u00e0 votre \u00e9quipe.<\/p><\/div><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-f868ab9 elementor-widget-tablet__width-initial elementor-widget elementor-widget-button\" data-id=\"f868ab9\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"elementor-button-wrapper\">\n\t\t\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-sm\" href=\"\/fr\/contact-us\/#contactus\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-button-text\">Demander les fiches techniques compl\u00e8tes | Obtenir un devis personnalis\u00e9<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-2ee3ecc0 e-con-full e-flex wpr-particle-no wpr-jarallax-no wpr-parallax-no wpr-sticky-section-no wpr-column-slider-no wpr-equal-height-no e-con e-child\" data-id=\"2ee3ecc0\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-6a9b399e elementor-widget elementor-widget-heading\" data-id=\"6a9b399e\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">4. Les 3 meilleurs sondeurs recommand\u00e9s pour les projets de lev\u00e9s fluviaux<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-69bd0e48 elementor-widget elementor-widget-text-editor\" data-id=\"69bd0e48\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"desc\"><div class=\"desc\"><p>Apr\u00e8s avoir compar\u00e9 les performances, la portabilit\u00e9 et l'adaptabilit\u00e9 sur le terrain, nous avons s\u00e9lectionn\u00e9 trois mod\u00e8les de premier choix, sp\u00e9cialement con\u00e7us pour les travaux quotidiens de lev\u00e9s hydrographiques fluviaux.<\/p><\/div><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-72c11f29 e-con-full e-flex wpr-particle-no wpr-jarallax-no wpr-parallax-no wpr-sticky-section-no wpr-column-slider-no wpr-equal-height-no e-con e-child\" data-id=\"72c11f29\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-6294fcf9 elementor-widget elementor-widget-heading\" data-id=\"6294fcf9\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">4.1 TSBES (sondeur \u00e0 faisceau unique)<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-3af107cb elementor-widget elementor-widget-text-editor\" data-id=\"3af107cb\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"desc\"><div class=\"desc\"><p>Ce sondeur \u00e0 faisceau unique est sp\u00e9cialement con\u00e7u pour nos navires sans \u00e9quipage (USV) Tboat et offre une pr\u00e9cision de l'ordre du centim\u00e8tre pour la cartographie des cours d'eau peu profonds.<br \/>Son faisceau de 8\u00b0 est particuli\u00e8rement adapt\u00e9 aux cours d'eau \u00e9troits. Le GNSS int\u00e9gr\u00e9, la synchronisation RTK et les filtres anti-bruit garantissent la stabilit\u00e9 des donn\u00e9es, m\u00eame dans les eaux troubles des rivi\u00e8res.<br \/>Cette conception \u00ab plug-and-play \u00bb s'adapte parfaitement \u00e0 nos USV, ce qui r\u00e9duit le temps d'installation et renforce la s\u00e9curit\u00e9 globale lors des longues missions de lev\u00e9s professionnels.<br \/>Il se distingue par sa bathym\u00e9trie fluviale ultrapr\u00e9cise, qui vous permet d'obtenir une cartographie d\u00e9taill\u00e9e du relief sous-marin avec un minimum d'intervention manuelle de la part de votre \u00e9quipe.<\/p><\/div><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-2f3bb412 e-con-full e-flex wpr-particle-no wpr-jarallax-no wpr-parallax-no wpr-sticky-section-no wpr-column-slider-no wpr-equal-height-no e-con e-child\" data-id=\"2f3bb412\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-1da93fc elementor-widget elementor-widget-heading\" data-id=\"1da93fc\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">4.2 TMBES (sondeur multifaisceaux avanc\u00e9)<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-15a2d183 elementor-widget elementor-widget-text-editor\" data-id=\"15a2d183\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"desc\"><div class=\"desc\"><p>Cet \u00e9chosondeur portable \u00e0 double fr\u00e9quence est \u00e9quip\u00e9 d'un syst\u00e8me d'enregistrement des donn\u00e9es int\u00e9gr\u00e9, ce qui en fait l'outil id\u00e9al pour les \u00e9quipes charg\u00e9es des lev\u00e9s fluviaux sur le terrain.<br \/>Fonctionnant \u00e0 400 kHz avec un faisceau de 8\u00b0, il couvre des profondeurs comprises entre 0,2 et 150 m et offre une pr\u00e9cision de \u00b12 cm (\u00b10,11 TP3T) sur toute la plage de mesure.<br \/>Son bo\u00eetier compact tout-en-un est adapt\u00e9 aux petits bateaux, aux kayaks et aux jet-skis. Le processeur DSP avanc\u00e9 prend en charge une fr\u00e9quence d'\u00e9mission de 20 Hz et g\u00e9n\u00e8re des \u00e9chogrammes nets permettant de distinguer la v\u00e9g\u00e9tation aquatique du lit de la rivi\u00e8re.<br \/>Les g\u00e9om\u00e8tres ind\u00e9pendants adorent cet appareil robuste. Il est facile \u00e0 mettre en service, enregistre des donn\u00e9es compl\u00e8tes et se connecte sans difficult\u00e9 \u00e0 des r\u00e9cepteurs GPS externes pour la cartographie des chenaux fluviaux peu profonds.<\/p><\/div><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-72bbd99a e-con-full e-flex wpr-particle-no wpr-jarallax-no wpr-parallax-no wpr-sticky-section-no wpr-column-slider-no wpr-equal-height-no e-con e-child\" data-id=\"72bbd99a\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-102f8a94 elementor-widget elementor-widget-heading\" data-id=\"102f8a94\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\"> 4.3 SDE (Sondeur portable \u00e0 double fr\u00e9quence)<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-6dd9a43f elementor-widget elementor-widget-text-editor\" data-id=\"6dd9a43f\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"desc\"><div class=\"desc\"><p>Cet \u00e9chosondeur \u00e0 double canal offre une large gamme de fr\u00e9quences, allant de 20 kHz \u00e0 200 kHz, pour une utilisation flexible sur le terrain.<br \/>Associez-le \u00e0 un transducteur de 200 kHz pour obtenir un faisceau \u00e9troit de 20\u00b0. Il prend en charge des profondeurs allant de 0,3 m en eaux peu profondes jusqu'\u00e0 600 m pour les lev\u00e9s multi-sc\u00e8nes.<br \/>V\u00e9ritable pilier du secteur, il atteint une fr\u00e9quence de balayage de 20 kHz et offre une pr\u00e9cision constante de \u00b10,01 m (\u00b10,11 TP3T) \u00e0 200 kHz.<br \/>Plusieurs interfaces, notamment RS-232 et Ethernet, garantissent une connexion ais\u00e9e avec les logiciels de GPS et de lev\u00e9s topographiques. Il fonctionne de mani\u00e8re fiable, aussi bien dans les rivi\u00e8res \u00e9troites que dans les cours d'eau profonds.<br \/>Ces trois mod\u00e8les ont pass\u00e9 avec succ\u00e8s des essais en conditions r\u00e9elles. Nos USV fonctionnent de mani\u00e8re stable m\u00eame en pr\u00e9sence de forts courants transversaux, tandis que les appareils CEE sont utilis\u00e9s pour des lev\u00e9s fluviaux et c\u00f4tiers dans le monde entier.<br \/>Respectez toujours les proc\u00e9dures standard : finalisez la planification pr\u00e9alable au lev\u00e9, effectuez l'\u00e9talonnage du GNSS et collectez les donn\u00e9es de mani\u00e8re syst\u00e9matique \u00e0 l'aide de bateaux ou de v\u00e9hicules sous-marins autonomes (USV) pour obtenir les meilleurs r\u00e9sultats possibles.<\/p><\/div><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-6bb00cb elementor-align-right elementor-widget elementor-widget-button\" data-id=\"6bb00cb\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"elementor-button-wrapper\">\n\t\t\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-sm\" href=\"\/fr\/contact-us\/#contactus\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-button-text\">Consultez nos experts | Trouvez le sondeur adapt\u00e9 \u00e0 votre projet fluvial<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-b295f36 e-con-full e-flex wpr-particle-no wpr-jarallax-no wpr-parallax-no wpr-sticky-section-no wpr-column-slider-no wpr-equal-height-no e-con e-child\" data-id=\"b295f36\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-56069eb elementor-widget elementor-widget-heading\" data-id=\"56069eb\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">5. Processus standard de lev\u00e9s hydrographiques pour la cartographie fluviale<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-d3b29fe elementor-widget elementor-widget-text-editor\" data-id=\"d3b29fe\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"desc\"><div class=\"desc\"><p>Chez Toknav, nous vous recommandons de suivre ce processus standardis\u00e9 afin de garantir des r\u00e9sultats de lev\u00e9s fluviaux coh\u00e9rents et de haute qualit\u00e9. Un \u00e9talonnage correct de votre sondeur est essentiel pour obtenir des donn\u00e9es bathym\u00e9triques fiables et pr\u00e9cises sur lesquelles vous pouvez vous appuyer.<\/p><\/div><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-fc09302 elementor-widget elementor-widget-text-editor\" data-id=\"fc09302\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"desc\"><div class=\"desc\"><p>This workflow follows 6 essential steps, with your echo sounder playing a starring role at every stage:<\/p><p>Planification du projet : cartographier les lignes de lev\u00e9 et noter les caract\u00e9ristiques du cours d'eau (profondeur, d\u00e9bit, obstacles) afin de tracer un itin\u00e9raire efficace et complet.<\/p><p>Equipment Setup &#038; Calibration: Calibrate your echo sounder and RTK GNSS together to ensure depth readings tie to accurate coordinates.<\/p><p>Mise en service sur le terrain : utilisez un bateau avec \u00e9quipage ou notre USV Tboat pour suivre votre itin\u00e9raire pr\u00e9vu en toute s\u00e9curit\u00e9, m\u00eame dans les sections de rivi\u00e8re difficiles.<\/p><p>Collecte de donn\u00e9es : votre sondeur enregistre les mesures de profondeur en temps r\u00e9el, associ\u00e9es aux positions GNSS, afin de constituer une cartographie d\u00e9taill\u00e9e du lit de la rivi\u00e8re.<\/p><p>Post-Processing &#038; QC: Filter noise and check for inconsistencies to clean your dataset before moving to mapping.<\/p><p>Cr\u00e9ation de cartes : transformez les donn\u00e9es trait\u00e9es en une carte hydrographique claire, avec des d\u00e9tails pr\u00e9cis gr\u00e2ce \u00e0 des donn\u00e9es de sondeur de haute qualit\u00e9.<\/p><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-4d327c4 e-con-full e-flex wpr-particle-no wpr-jarallax-no wpr-parallax-no wpr-sticky-section-no wpr-column-slider-no wpr-equal-height-no e-con e-child\" data-id=\"4d327c4\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-e88f1d6 elementor-widget elementor-widget-heading\" data-id=\"e88f1d6\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">6. Solutions int\u00e9gr\u00e9es de relev\u00e9 fluvial Toknav et conseils de fin<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-14018ce elementor-widget elementor-widget-text-editor\" data-id=\"14018ce\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"desc\"><div class=\"desc\"><p>Chez Toknav, nous proposons des solutions hydrographiques compl\u00e8tes comprenant des v\u00e9hicules sous-marins autonomes (USV), des sondeurs et des r\u00e9cepteurs GNSS afin de simplifier l'ensemble de votre processus de lev\u00e9 fluvial.<br \/>Nos USV Tboat sont livr\u00e9s \u00e9quip\u00e9s d'origine de sondeurs et de r\u00e9cepteurs RTK, ce qui vous permet de commencer imm\u00e9diatement \u00e0 collecter efficacement des donn\u00e9es fluviales d\u00e8s leur mise en service sur site.<br \/>Si vous avez besoin de sp\u00e9cifications techniques d\u00e9taill\u00e9es ou de configurations d'\u00e9quipement personnalis\u00e9es, consultez nos pages produits ou contactez notre \u00e9quipe pour b\u00e9n\u00e9ficier de conseils d'experts.<br \/>Nous vous proposerons une combinaison sur mesure d'un USV et d'un sondeur, parfaitement adapt\u00e9e aux exigences sp\u00e9cifiques de votre projet d'\u00e9tude fluviale ou c\u00f4ti\u00e8re.<br \/>Que vous r\u00e9alisiez des lev\u00e9s hydrographiques r\u00e9guliers, des \u00e9tudes techniques ou un suivi \u00e0 long terme, nos solutions int\u00e9gr\u00e9es vous font gagner du temps et r\u00e9duisent consid\u00e9rablement vos co\u00fbts d'exploitation.<br \/>Pr\u00eat \u00e0 moderniser votre \u00e9quipement d'\u00e9tude fluviale avec des appareils autonomes fiables ? D\u00e9couvrez d\u00e8s maintenant notre gamme compl\u00e8te de v\u00e9hicules de surface sans pilote : <a href=\"\/fr\/toknav-unmanned-surface-vehicle\/\">Cliquez ici pour en savoir plus sur les USV de Toknav et cr\u00e9er d\u00e8s aujourd'hui votre syst\u00e8me d'enqu\u00eate id\u00e9al.<\/a><\/p><\/div><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>","protected":false},"excerpt":{"rendered":"<p>Home Best Echo Sounder for River Surveying: Practical Hydrographic Survey Guide 2026-06-03 1. Quick Overview: Why Echo Sounders Power River Hydrographic Surveys At Toknav, we know echo sounders are the primary depth-sensing tool in hydrographic surveys, especially for riverbed mapping. In this guide, we break down the latest survey-grade models. We also discuss practical workflows for river surveying. We\u2019ve built a detailed spec comparison table, picked the top 3 echo sounders for river use, and explained how your choice impacts survey accuracy and efficiency. We\u2019ve added clear links and CTAs to help you explore our USV and support services for turnkey solutions. Professional echo sounder working for river surveying and hydrographic survey on field site Hydrographic surveying maps underwater depths, terrain, and hidden obstacles. This ensures navigation safety and supports waterway engineering projects. Rivers and shallow waterways present tricky challenges, including vegetation, turbidity, and shifting depths. That\u2019s why high-frequency 200 kHz echo sounders are our go-to for precise shallow-water detection. Integrated GPS and RTK positioning are also must-haves. They tag every depth reading with accurate geographic coordinates for reliable mapping results. 2. Key Factors to Choose an Echo Sounder for River Surveying Picking a suitable echo sounder makes all the difference for smooth field work. Below are the core factors every river surveyor should check before making a choice. 2.1 Frequency &amp; Signal Penetration High-frequency systems around 200 kHz deliver sharp detail in shallow river water. Lower frequencies (24\u201333 kHz) cut through murky water but use wider signal beams. Dual-frequency echo sounders combine both strengths, letting you capture clear data no matter if the river is clear or filled with sediment and turbidity. 2.2 Beam Angle Narrow beams (3\u20135\u00b0) capture finer spatial details for precise river mapping. Wider beams (8\u201320\u00b0) cover more ground per ping but reduce detail level. For example, our integrated echo sounder for Tboat USVs uses an 8\u00b0 beam at 200 kHz, striking a perfect balance between wide coverage and clear survey data for river routes. 2.3 Depth Range Most river surveys only require a 0\u2013100 m depth range. Still, models supporting 200 m or deeper add great flexibility for deep river channels. Our echo sounder covers 0.3\u2013200 m, handling regular shallow rivers and deeper water sections without switching devices. 2.4 Accuracy &amp; Resolution Professional survey-grade echo sounders reach centimeter-level accuracy. Our model offers \u00b12 cm depth accuracy for highly reliable river data. Most modern devices hit \u00b10.01 m or 0.1% of measured depth, with 10\u201320 Hz ping rates boosting data density for fast-flowing river environments. 2.5 Integration &amp; Interface Quality echo sounders support standard NMEA or Ethernet data output, like RS-232 and TCP\/IP. This allows for seamless connection with GNSS receivers and survey software. All-in-one portable units that combine echo sounder and GNSS simplify setup. They are perfect for small survey boats working along narrow river sections. Your echo sounder selection directly impacts final bathymetry results. A precise device delivers clear maps, while poor transducer choices can cause data errors or missing terrain features. Get Free Professional Advice | Inquire About Echo Sounder Selection 3. Echo Sounder Spec Comparison for River Surveys We\u2019ve sorted mainstream river survey echo sounders into a clear table below, with specs pulled directly from official product data for your easy reference. Main echo sounder models for river surveying and hydrographic survey specification display Model Frequency Beam Angle Depth Range Accuracy Interface Ideal Use-Case TSBES (Single-beam Echosounder) 200k Hz 8\u00b0\u00a0 0.5m-200m 1cm+0.1%h Lan,RS232(Baudrate9600-230400) For shallow mapping and portable small-boat hydrography. TMBES (Advanced Multibeam Echosounder) 400k Hz 8\u00b0\u00a0 0.2m-150m 2cm+1ppm(RTK)0.6m(SBAS)\/\/1.2m(single point) RS-232 High-resolution 3D mapping in shallow waters; multifunctional surveys from rivers to coastal areas. SDE (Portable Dual Frequency Echo Sounder) 200k Hz &amp; 20k Hz standard 200k Hz: 7\u00b020k Hz: 20\u00b0 200k Hz: 0.3m-200m 20k Hz: 0.5m-600m 200 kHz: \u00b11cm\u00b10.1%D 20 kHz: \u00b110cm\u00b10.1%D (D is the depth value) 3* RS232, 1* RS485, 1 power supply interface, 1 transducer port and 1 LAN port High frequency for shallow mapping &amp; silt thickness; low frequency for rivers to deep seas. Each model has its own strengths for different river survey scenarios. Check your on-site conditions and working tools to pick the most matched solution for your team. Request Full Datasheets | Get Custom Price Quote 4. Top 3 Recommended Echo Sounders for River Survey Projects After comparing performance, portability and field adaptability, we\u2019ve picked 3 top models tailored for daily river hydrographic survey work. 4.1 TSBES (Single-beam Echosounder) This single-beam sounder is built exclusively for our Tboat USVs, delivering centimeter-level precision for shallow river mapping.Its 8\u00b0 beam suits narrow river channels well. Built-in GNSS and RTK sync plus noise filters keep data stable even in turbid river water.The plug-and-play design works perfectly with our USVs, cutting down setup time and improving overall safety during long professional survey missions.It stands out for ultra-precise river bathymetry, letting you get detailed underwater terrain with minimal manual operation from your team. 4.2 TMBES (Advanced Multibeam Echosounder) This portable dual-frequency echo sounder comes with built-in data logging, ideal for mobile river survey teams.Running at 400 kHz with a 8\u00b0 beam, it covers 0.2\u2013150 m depth and maintains \u00b12cm (\u00b10.1%) accuracy across full ranges.Its compact all-in-one body fits small boats, kayaks and jet skis. Advanced DSP supports 20 Hz ping rate and clear echograms to tell river vegetation apart from real riverbeds.Independent surveyors love this rugged device. It\u2019s easy to deploy, records complete data and connects smoothly with external GPS units for shallow river channel mapping. 4.3 SDE (Portable Dual Frequency Echo Sounder) This dual-channel echo sounder features a wide frequency range from 20 kHz to 200k Hz for flexible field use.Pair it with a 200k Hz transducer for a narrow 20\u00b0 beam. It supports depths from 0.3m shallow water up to 600m for multi-scene surveys.As a trusted industry workhorse, it reaches 20k Hz ping rate and steady \u00b10.01 m (\u00b10.1%) accuracy at 200k Hz.Multiple interfaces including RS-232 and Ethernet ensure easy connection with GPS and survey software. It works reliably from narrow rivers to deep waterways.All three models<\/p>","protected":false},"author":1,"featured_media":18244,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_uag_custom_page_level_css":"","site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[53],"tags":[],"class_list":["post-18238","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"acf":[],"uagb_featured_image_src":{"full":["https:\/\/toknavgnss.com\/wp-content\/uploads\/2026\/06\/river-hydrographic-survey-boat.jpg",1536,1024,false],"thumbnail":["https:\/\/toknavgnss.com\/wp-content\/uploads\/2026\/06\/river-hydrographic-survey-boat-150x150.jpg",150,150,true],"medium":["https:\/\/toknavgnss.com\/wp-content\/uploads\/2026\/06\/river-hydrographic-survey-boat-300x200.jpg",300,200,true],"medium_large":["https:\/\/toknavgnss.com\/wp-content\/uploads\/2026\/06\/river-hydrographic-survey-boat-768x512.jpg",768,512,true],"large":["https:\/\/toknavgnss.com\/wp-content\/uploads\/2026\/06\/river-hydrographic-survey-boat-1024x683.jpg",1024,683,true],"1536x1536":["https:\/\/toknavgnss.com\/wp-content\/uploads\/2026\/06\/river-hydrographic-survey-boat.jpg",1536,1024,false],"2048x2048":["https:\/\/toknavgnss.com\/wp-content\/uploads\/2026\/06\/river-hydrographic-survey-boat.jpg",1536,1024,false],"trp-custom-language-flag":["https:\/\/toknavgnss.com\/wp-content\/uploads\/2026\/06\/river-hydrographic-survey-boat-18x12.jpg",18,12,true]},"uagb_author_info":{"display_name":"jeffreyrtk@gmail.com","author_link":"https:\/\/toknavgnss.com\/fr\/author\/jeffreyrtkgmail-com\/"},"uagb_comment_info":0,"uagb_excerpt":"Home Best Echo Sounder for River Surveying: Practical Hydrographic Survey Guide 2026-06-03 1. Quick Overview: Why Echo Sounders Power River Hydrographic Surveys At Toknav, we know echo sounders are the primary depth-sensing tool in hydrographic surveys, especially for riverbed mapping. In this guide, we break down the latest survey-grade models. We also discuss practical workflows\u2026","_links":{"self":[{"href":"https:\/\/toknavgnss.com\/fr\/wp-json\/wp\/v2\/posts\/18238","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/toknavgnss.com\/fr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/toknavgnss.com\/fr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/toknavgnss.com\/fr\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/toknavgnss.com\/fr\/wp-json\/wp\/v2\/comments?post=18238"}],"version-history":[{"count":67,"href":"https:\/\/toknavgnss.com\/fr\/wp-json\/wp\/v2\/posts\/18238\/revisions"}],"predecessor-version":[{"id":18879,"href":"https:\/\/toknavgnss.com\/fr\/wp-json\/wp\/v2\/posts\/18238\/revisions\/18879"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/toknavgnss.com\/fr\/wp-json\/wp\/v2\/media\/18244"}],"wp:attachment":[{"href":"https:\/\/toknavgnss.com\/fr\/wp-json\/wp\/v2\/media?parent=18238"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/toknavgnss.com\/fr\/wp-json\/wp\/v2\/categories?post=18238"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/toknavgnss.com\/fr\/wp-json\/wp\/v2\/tags?post=18238"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}