高功率微波大气传播数值计算的加速方法

Acceleration Method for Numerical Calculation of High Power Microwave Propagation in the Air

用时域有限差分法(FDTD)对高功率微波(HPM)大气传播进行数值仿真时,所要关心的仅是传播目标点HPM波形的分布,而传播过程中每一空间点不需要考虑,所以可将传播空间分段计算,在分段点处需要增加一个吸收边界,并将传播到该点的HPM保存下来,作为后继计算空间的源加入到其后一空间步,完成数据传递。通过这样循环处理可以达到节约计算时间和存储内存的目的,从而达到加速计算的目的。

In the simulate the High-Power Microwave （HPM） propagation in the air by FDTD, the distribution of HPM at the target point is our only focus, without concerning its distribution of each point in space. The propagation space can be considered separately. An absorbing boundary is needed at the sub-point. Save the HPM data at this point and the data is added to the follow-up step as a source. So the data transfer is completed. By this circular processing, computing time and memory are saved. In other words, the calculation is accelerated.