基于FEKO计算的异型结构三面角反射器RCS特性分析

Analysis on RCS of the Abnormal Shape Triangular Trihedral Corner Reflector Based on FEKO Software

针对常规角反射器固有特性无法满足特殊场合使用要求的问题,在研究角反射器反射机理的基础上,通过对角反射器的顶角、原点、斜边等不同部位进行优化设计,采用FEKO软件对新型角反射器进行建模仿真,从而获得优化后的异型结构三面角反射器的RCS值及方位覆盖角度变化规律。对多种优化方式进行比较,结果表明:对顶角进行优化时,RCS最大值及覆盖范围变化较小;对斜边进行优化时,RCS量值虽会降低,但覆盖角度更加宽广,有效方位角度内的RCS起伏更小。两种方式可满足特殊场合的实践应用,具有实际的工程价值。

Aiming at the problem that the inherent characteristics of corner reflector can not meet therequirements of special occasions,on the basis of analyzing the reflection mechanism of the normal triangulartrihedral corner reflector,vertex angle, origin angle, hypotenuse and other different parts of corner reflector aredesigned optimally.FEKO software is used to simulate the corner reflector,so as to obtain the RCS values andazimuth coverage angle variation rule of the abnormal shape triangular trihedral corner reflector. Multipleoptimization methods are compared. The results show that when the vertex angle is optimized,the maximunvalue and coverage range of RCS will change less;when the hypotenuse is optimized, the RCS values willdecrease, but the angle will extend, and the fluctuation of RCS within the effective azimuth angle will besmaller,both of that could meet the practical application of special occasions and have practical engineeringvalue.