由于表面声道与深海声道间的耦合效应,声波在双轴海洋声道中的传播比较复杂,因此求解双轴海洋声道中的声场就比较困难。在 WKBZ 本征函数的基础上,推导出了参考界面相位修正的一致表达式,并将浅海声传播的波束位移射线简正波(BDRM)理论应用于计算双轴海洋声道中的声场,进行了数值模拟并与传统简正波方法进行比较,结果表明应用 BDRM 理论计算的传播损失具有很高的精度和速度,可以对双轴海洋声道内声传播问题进行分析和预报。 Due to the coupling effect between surface channels and deep-sea channels, sound waves propagate in biaxial ocean channels more complicatedly, so it is more difficult to solve the sound field in biaxial ocean channels. Based on the WKBZ eigenfunctions, the consistent expression of the phase correction of the reference interface is deduced and the BDRM theory is applied to calculate the sound field in the biaxial ocean channel. The numerical results The results show that the propagation loss calculated by BDRM theory has high accuracy and speed, and the acoustic propagation problem in biaxial marine channels can be analyzed and predicted.