我国典型海底的声场传播仿真研究

利用声线理论对水声信道进行了建模仿真设计。对射线跟踪模型进行了一些分析和改进。完成了我国典型斜坡海底地形的声线轨迹、本征声线及传播损失的求解问题，并进行了射线模型的数学建模和计算机数值求解。此外，根据实际应用中的要求，设计了计算声线轨迹、声传播损失及本征声线搜索的软件，并用程序对海上实测数据进行了仿真，得到了令人满意的结果。仿真结果表明，该基于射线模型的软件对水声信道参数预测精度高。具有很强的工程应用价值。

Simulation of Underwater Acoustic Propagation over Typical Ocean Bottom in China

A method of underwater acoustic channel simulation based on ray model is discussed in this paper. Some theoretic analyses and improved advices of ray model is given. The solutions of the ray - tracings, cigcnrays and acoustic propagation losses over sloping hottoms are also extracted. The mathematical modeling and the computer software implementation are completed. Moreover, according to the requirement of the practical application, a software for computing the ray - tracings, the propagation losses and the searching of the cigcnrays is designed. The simulation results of the practical data are satisfactory and show that the modal is precise to estimate the underwater acoustic channel and has a promising value for engineering application.