电大尺寸卫星目标RCS的PO法计算与分析

Calculation and Analysis of Electronically Large Size Satellite Target's RCS using PO Method

文章给出了一种用于电大尺寸复杂目标雷达散射截面的建模与计算方法,并利用该方法对电大尺寸理想导体的立方体和圆柱体进行仿真验算。通过与矩量法的计算结果比较表明,该方法能快速有效地解决电大尺寸复杂目标的电磁散射问题。文章最后给出了卫星目标RCS的计算实例,并分析了卫星表面的天线和推进器等细小结构对卫星总体的RCS贡献,确定了卫星的主要散射源。

A modeling and calculation method for the RCS of complicated targets with electronically large size is given in this paper, and the method is applied in the calculation of cube and cylinder with electronically large size and perfect conductor characteristic. After the comparison with method of moments, we get the conclusion that the method adopted in the paper can effectively and fleetly solve the problem of EM scattering for complicated targets with electronically large size. Finally, the paper gives the instance of calcuiation to satellite target＇s RCS, and makes the analysis of the contribution that some tiny exterior antenna and thruster of satellite structure have given to its RCS. At the same time, it＇s confirmed that which part is the main scattered source for satellites.