海洋声传播二维PE算法对海底边界条件的改进处理

Research on Improvement of Bottom Boundary ConditionExpressions in 2D PE Method of Ocean Sound Propagation

运用海洋声传播二维 PE算法对不规则海底边界条件的处理 ,作者提出 1种改进方法 ,即利用抛物方程和界面边界条件 ,对界面附近的抛物方程的差分形式进行修正 ,以考虑复杂海底边界的影响。通过实际的数值计算表明 ,运用该方法计算声场 ,在提高计算精度方面起到有益的作用。

An improved method is adopted to handle the bottom boundary conditions. The parabolic equation and the interface boundary conditions are used to modify the form of the parabolic equation nearby the interface.By using this method the effects of the irregular ocean bottom interface can be taken into account and the accuracy of the PE method can be improved.