Key Technologies Of Underwater Topography Measurement System

At the basis of designing underwater geomorphological measurement system concrete plan, this dissertation makes study and analysis on its measuring depth of water sonar system and dynamic global position system. This dissertation simply and thoroughly introduces the state of underwater acoustic transducer and array. It covers the basic situation, the study benefits, the classification and role, analyses the performance index, designs the performance parameter relating to themselves performance synthesis and sonar equation. And then, the paper analyses the reason engaged in the directional property of underwater acoustic transducer and array, discusses the physical parameter of the directional property. To point acoustic source equal spacing linear array, the dissertation makes experiment analysis and simulation. Finally, the study gives itself plan about information fusion of position system and underwater signal, tallying the measured data of time, position and depth with ground mark.The dissertation has upstanding reference value to underwater geomorphological measurement system, for instance reservoir region, lakes, as well as measuring the flotage and underwater precipitation.