Design Of Underwater Terrain Survey System Based On Medium Wave Data Link DGPS

At present, dredging and harnessing of the rivers and lakes is one of the national major projects which are pushed on by government, and underwater terrain survey is an important measurement means. In our country, underwater terrain survey has been done by hand mostly, that is not only waste time and money, but also has a poor precision. Therefore, we developed an underwater terrain survey system, which integrates medium wave data link DGPS, ultrasonic depth finder, mobile communication, computer graphics and GIS, in order to survey and observe underwater terrain automatically. This paper describes the architecture of the system, the design of its hardware and software, and the field test results. Compared with the traditional survey technology, the system has advantages of higher accuracy, increased operation efficiency and less investment due to employed.