摘要
飞行器再入时形成的等离子体鞘套影响通信和雷达探测。利用FDTD方法分析等离子体鞘套与信号的相互作用具有精度高、算法简便和可移植等优点,但因其需要大量计算机资源,所以现阶段还只能分析某些特征部分的电磁学特性。利用有限计算机资源模拟电磁波在无限空间中的传播,需要一个恰当的一维辅助数组来实现等离子体层和飞行器表面的区域分割并将平面波引入到三维计算空间中。先在一维中编程实现,利用解析方法验证了一维程序的正确性,并利用一维辅助数组将编程推广到三维计算空间中。
The plasma sheath of reentry vehicles has influence on communication and radar detection. The FDTD method has advantages of high precision, simple algorithm, and code portability etc. for computing the transmission of waves through the plasma sheath. At present, the method is only suitable for important parts because it takes too much computer resources. To simulate the transmission of electromagnetic waves through infinite space using limited computer resources, the right auxiliary one-dimensional incident array is needed to segment the calculation region and introduce the plane wave to the three-dimensional computation space. The program realized in one-dimensional space firstly, and verified the results with analytical method results, and the program was extended to the three-dimensional space with the one-dimensional auxiliary array.
出处
《装备环境工程》
CAS
2009年第4期23-26,45,共5页
Equipment Environmental Engineering
