基于Daubechies4小波变换地形滤波的复杂电磁环境仿真加速方法

Simulation Speed Method of Complex Electromagnetic Environment Based on Daubechies4 WT Terrain Filtering

本文提出了一种基于射线追踪算法的复杂电磁环境仿真计算的加速方法,同时结合并行系统来共同加速仿真计算。对地形DEM数据进行Daubechies4二维离散小波变换,地形滤波在一定范围内有效降低了其复杂度。继而搭建并行计算系统,将滤波后的地形应用到多个辐射源的仿真建模并行计算,提高复杂电磁环境仿真计算速度。经过对该方法进行多次实验,验证了该方法可以在一定精度范围内提高复杂电磁环境计算速度。

The paper proposes a method to improve the simulation speed of complex electromagnetic environment based on ray tracing model. Meanwhile the acceleration simulation calculation is done combined with parallel system. Do Daubechies4 two-dimensional discrete wavelet transform on the terrain DEM data to smooth the terrain to accelerate simulation. The complex of terrain filtering is reduced in a certain range. Then the parallel computing system is established; and the terrain after filtering is applied in several radiation source to simulation modelling and parallel computing. It can improve the simulating calculation speed in the complex electromagnetic environment. After a number of tests, the results show that this method can be adopted to improve the computation speed in the complex electromagnetic environment while maintaining the computation accuracy simultaneously.