Design and Ezperimental Research on Shallow Water Volume Reverberation Signal Acquisition System

摘要：

Volume reverberation is the main interference of active sonar in shallow coastal waters. This greatly limits the sonars working range and the performance of parameter estimation. A lot of research on the properties of deep scattering layer,sea surface reverberation,sea bottom reverberation has been done.However,the research on volume reverberation at 10 to 40 kHz in shallow coastal waters is only a little.It is difficult to collect shallow water volume reverberation signal by conventional underwater acoustic signal acquisition equipments with an electrical switch,due to circuit obstruction. Therefore,based on the characteristic of volume reverberation,a signal acquisition system was designed. The control core was made up of Field Programmable Gate Array (FPGA). The signal acquisition system was tested in shallow coastal waters. The law of volume backscattering intensity with temperature,salinity,the concentration of suspended sediment particles,and frequency is summarized. The results demonstrate that the volume backscattering intensity may be changed by 30 dB,due to the concentration change of suspended sediment particles.

关键词： Volume Reverberation Signal Acquisition System FPGA Volume Backscattering Intensity

作者: Yongwei LIU Qi LI Mengying CHEN

作者单位: College of Underwater Acoustic Engineering,Harbin Engineering University,Harbin,China

会议类型: 国际会议

会议名称: 2009 IEEE 8th International Conference on ASIC(第八届IEEE国际专用集成电路大会)

会议地点: 长沙

会议语种:英文

页码: 944-947

在线出版日期: 2009-10-20（万方平台首次上网日期，不代表论文的发表时间）