浅海倾斜海底对声呐探测影响研究

Influence of Slope Seafloor to Sonar Detecting in Shallow Water

我国周边海域存在大面积的大陆架和大陆坡,倾斜海底对于声传播有一定影响。根据作战实际需要,论文采用抛物方程RAM算法对声源位置确定时浅海斜坡海底声传播进行了计算,并与传统海底斜坡定义下的声传播进行了比较,进一步仿真分析了声源位置确定时倾斜海底对声呐作用距离的影响。仿真结果表明:在声源位置确定时,下坡海底方向是更为有利的声呐探测方向,论文的计算结果可以为实际声呐在斜坡海域的作战使用提供有益参考。

Big area of continental shelves and continents in the surrounding waters of our country, slope seafloor can influence the acoustic propagation in the water. According to the practical combat needs, RAM(Range-depedent Acoustic Model) based on parabolic model is used to compute acoustic propagation when the position of sound source is fixed with slope seafloor, then the results are compared with the acoustic propagation with traditional definition of slope seafloor. What’s more, the impact on sonar detecting distance is analyzed according to the simulation results. The simulation results show that the sonar detecting distance is further with downslope seafloor in shallow water. The conclusion of the paper can provide suggestion for sonar detecting in shallow water.