双向抛物方程的并行方法研究

Parallel method for two-way parabolic equation approach

提出了基于OpenMP(Open Multi Processing)的双向抛物方程并行方法,可快速求解多障碍物环境中的电波传播问题.分别以双刃峰环境和十五刃峰环境为例,验证了并行双向抛物方程的正确性和高效性.计算结果表明:在具有16个计算核心的计算机上,采用并行方法后,双向抛物方程的计算速度提升了8.8倍,有效地提高了仿真效率;最后,采用并行双向抛物方程模拟了实际地形中全球移动通信系统GSM(Global System for Mobile Communication)基站天线的电磁覆盖特性,数值结果表明该方法具有很好的加速效果.

For the fast simulation of the radio wave propagation problems in multiobstacles environment, a parallel method of two-way parabolic equation（PE） method based on open multi processing（openMP） is proposed in this paper. Its correctness and high efficiency are verified via a two knife-edge case and a fifteen knifeedge case respectively. The results show that the parallel two-way PE method can make the computational speed improved by 8.8 times with 16 cores. Finally, the propagation factor of a Global System for Mobile Communication（GSM） base station in the real terrain is simulated. Numerical results show that the proposed parallel method has excellent acceleration effect.