几种典型的粗糙海面下的声传播计算方法

Several sound propagation calculation methods under rough sea surface

针对中远距离的声场预报,尤其是浅海或者存在等温层表面声道的水声环境,粗糙海面对声传播的影响较为显著的问题,本文分析并比较了几种典型的粗糙海面下的声传播模型:Krakenc-KA粗糙海面声传播模型、Krakenc-SSA粗糙海面声传播模型和Ramsurf粗糙海面声传播模型,并通过分析高海况下的海试数据证明了Ramsurf粗糙海面声传播模型的有效性,为粗糙海面下的声传播研究提供了模型基础。实验结果表明:对于粗糙海面下的声场预报和声呐性能预报具有重要意义。

The effect of sea surface roughness on the sound propagation is of great significance to acoustic field predictions in medium-and long-ranges propagation ranges,especially for shallow oceans or oceans with a surface duct. This study investigates several sound propagation calculation methods with surface roughness—Krakenc-Kirchhoff approximation( KA),Krakenc-small slope approximation( SSA),and Ramsurf—to provide a model basis for sound propagation research with sea surface roughness. Moreover,the effectiveness of Ramsurf model was certified by analyzing trial data in high sea state,providing a model for acoustical transmission research under rough surface.It is of great significance to acoustic field prediction and sonar performance prediction.