波束位移射线简正波理论在浅海声传播损失数值预报中的应用

Applications of BDRM theory to numerical predictions of acoustic transmission losses in shallow water

摘要: 波束位移射线简正波(BDRM)理论适用于一般分层浅海,具有计算精度高,计算速度快等优点.本文应用BDRM理论,并结合带宽信号相干声场的平均理论,预报了浅海传播损失。数值计算与实验数据比较表明,BDRM理论能较好的预报浅海声传播损失.

Abstract: The Beam-Displacement Ray-Mode(BDRM)theory has been introduced for the prediction of sound propagation in the stratified shallow water in some papers. The BDRM theory has many advantages such as high accuracy and fast computing speed. In this paper, numerical transmission losses in shallow water are calculated by the BDRM theory. The numerical predictions are in good agreement with the measured transmission loss data.