{"id":2073326,"date":"2023-06-28T11:00:00","date_gmt":"2023-06-28T16:00:00","guid":{"rendered":"https:\/\/csengineermag.com\/?p=2073326"},"modified":"2023-06-27T16:46:04","modified_gmt":"2023-06-27T21:46:04","slug":"this-self-driving-boat-maps-underwater-terrain","status":"publish","type":"post","link":"https:\/\/csengineermag.com\/this-self-driving-boat-maps-underwater-terrain\/","title":{"rendered":"This Self-driving Boat Maps Underwater Terrain<\/strong>"},"content":{"rendered":"\n

Step aside self-driving cars, self-driving boats are here \u2014 and they can do more than take you on a cruise.<\/p>\n\n\n\n

Researchers at\u00a0The University of Texas at El Paso<\/a>\u00a0have constructed a fully autonomous boat that can carry out bathymetric surveys \u2014 surveys of the depth and terrain of bodies of water like oceans, rivers and lakes. The team hopes the robotic boat can help simplify the survey process, which usually takes a crew of individuals to complete, as well as assist with reconnaissance missions.<\/p>\n\n\n\n

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An autonomous boat made by researchers at The University of Texas at El Paso floats at Ascarate Lake, located in El Paso, Texas. Credit: The University of Texas at El Paso.
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The boat and its capabilities are described in the May issue of the journal\u00a0Sensors<\/a><\/em>.\u00a0<\/p>\n\n\n\n

\u201cThere are lots of reasons scientists carry out bathymetric surveys,\u201d said\u00a0Laura Alvarez, Ph.D.<\/a>, lead author of the study. \u201cIf you want to work in water-related studies, you need to know the shape and landscape of bodies of water. For example, you might want to map a reservoir to learn about water supply for electrical demand, or a river to learn about river evolution or flow patterns.\u201d<\/p>\n\n\n\n

Alvarez, an assistant professor in UTEP\u2019s Department of Earth, Environmental and Resource Sciences, specializes in unmanned systems for earth science. She started developing the boat several years ago but needed help tweaking and perfecting the system.<\/p>\n\n\n\n

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From left to right: UTEP alumnus Fernando Sotelo, Assistant Professor Laura Alvarez and doctoral student Jayanga Thanuka Samarasinghe observe the autonomous boat at Ascarate Lake, located in El Paso, Texas. Credit: The University of Texas at El Paso.<\/figcaption><\/figure>\n\n\n\n
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From left to right: UTEP alumnus Fernando Sotelo, doctoral student Jayanga Thanuka Samarasinghe and Assistant Professor Laura Alvarez carry the boat from shore into Ascarate Lake. Credit: The University of Texas at El Paso.<\/figcaption><\/figure>\n\n\n\n
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From left to right: UTEP doctoral student Jayanga Thanuka Samarasinghe, alumnus Fernando Sotelo and Assistant Professor Laura Alvarez observe the boat from shore as it maps Ascarate Lake\u2019s underwater terrain. Credit: The University of Texas at El Paso.<\/figcaption><\/figure>\n<\/figure>\n\n\n\n


That\u2019s when she recruited science and electrical engineering master\u2019s student Fernando Sotelo \u201822.<\/p>\n\n\n\n

\u201cThe first time we tested the boat was at the swimming pool at UTEP \u2014 just to make sure it could float,\u201d laughed Fernando Sotelo, study co-author and now UTEP alumnus.<\/p>\n\n\n\n

Over the course of a year, Sotelo refined the aluminum watercraft, a 3-foot-by-3-foot circular craft that rests on a thick black inner tube, testing it in various environments like New Mexico\u2019s Grindstone and Elephant Butte lakes. <\/p>\n\n\n\n

His goals included extending the boat\u2019s hours of operation and reliability; and making it fully autonomous and responsive to potential environmental issues like wind speed and temperature flux. Now, a failsafe can detect when batteries are low or wind gusts are too high and triggers a return-to-base function.<\/p>\n\n\n

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UTEP alumnus Fernando Sotelo prepares the autonomous boat for mapping Ascarate Lake\u2019s underwater terrain. Credit: The University of Texas at El Paso.<\/figcaption><\/figure><\/div>\n\n\n

The rudderless watercraft operates with four thrusters, allowing it to travel up to 5 feet per second and easily rotate 360-degrees. A solar panel and lithium battery allow the boat to last up to four hours at sea \u2014 covering an area up to 472,400 square feet.<\/p>\n\n\n\n

All the while a multibeam echosounder \u2014 a sonar system \u2014 emits sound waves from the bottom of the boat. Water depth can be calculated by the time it takes for the sound wave to water to hit the seafloor and return to the sonar system. The sound itself that returns to the device can help detect the type of material on the seafloor.<\/p>\n\n\n\n

To show proof of concept, the team successfully created 2D and 3D maps of portions of Ascarate Lake in El Paso, Texas and Grindstone Lake in Ruidoso, New Mexico.<\/p>\n\n\n\n

\u201cMy goal was to make the boat state-of-the-art and I think I did that. Of course, there\u2019s always room to improve,\u201d said Sotelo, who worked on the boat for his master\u2019s thesis. \u201cBut the system works and for now, I hope it can make it easier for scientists like Dr. Alvarez to conduct their research.\u201d<\/p>\n\n\n\n

Alvarez will put the boat to use for the first time this summer to study the Rio Grande River\u2019s flow and depth.<\/p>\n\n\n\n

She adds that the instructions to replicate the boat are online in their latest Sensors publication.<\/p>\n\n\n\n

\u201cThe reason we wrote the paper was so that anyone can reproduce it by themselves,\u201d Alvarez said. \u201cIt serves as an effective guideline to get them started.”<\/p>\n","protected":false},"excerpt":{"rendered":"

Step aside self-driving cars, self-driving boats are here \u2014 and they can do more than take you on a cruise. Researchers at\u00a0The University of Texas at El Paso\u00a0have constructed a fully autonomous boat that can carry out bathymetric surveys \u2014 surveys of the depth and terrain of bodies of water like oceans, rivers and lakes. […]<\/p>\n","protected":false},"author":4972,"featured_media":2073338,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"video","meta":{"_seopress_robots_primary_cat":"none","footnotes":""},"categories":[1869,1854],"tags":[11931,49554,29108,49555,49552,49551,49556,49553,49550],"acf":[],"views":19,"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"https:\/\/csengineermag.com\/wp-content\/uploads\/2023\/06\/maxresdefault-2.jpg","_links":{"self":[{"href":"https:\/\/csengineermag.com\/wp-json\/wp\/v2\/posts\/2073326"}],"collection":[{"href":"https:\/\/csengineermag.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/csengineermag.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/csengineermag.com\/wp-json\/wp\/v2\/users\/4972"}],"replies":[{"embeddable":true,"href":"https:\/\/csengineermag.com\/wp-json\/wp\/v2\/comments?post=2073326"}],"version-history":[{"count":0,"href":"https:\/\/csengineermag.com\/wp-json\/wp\/v2\/posts\/2073326\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/csengineermag.com\/wp-json\/wp\/v2\/media\/2073338"}],"wp:attachment":[{"href":"https:\/\/csengineermag.com\/wp-json\/wp\/v2\/media?parent=2073326"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/csengineermag.com\/wp-json\/wp\/v2\/categories?post=2073326"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/csengineermag.com\/wp-json\/wp\/v2\/tags?post=2073326"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}