海上多角反射体群雷达散射面积的快速预估算法

依据远场高频环境下雷达散射面积(RCS)的计算原理,对海上多个角反射体所组成的无源对抗系统的RCS特性进行预估计算。针对传统算法计算量过大的问题,借助Hepermesh有限元网格处理软件,提出了一种快速算法,该算法首先应用混合面元、快速投影理论实现海上单个角反射体RCS计算,然后结合散射中心合成算法对海面随机布放多角反射体群的整体RCS特性进行预估,随后利用FEKO软件对算法进行了仿真验证。结果表明:新算法能够在保持计算精度的前提下,有效缩短海上多角反射体群RCS的计算时间。

Rapid radar cross section estimation algorithm for marine multi-corner reflectors at sea

According to the countermeasure process and the principle of calculating radar cross section(RCS) in the far field and high frequency environment,this paper focuses on the method for calcula-ting RCS values of the passive countermeasure system composed of maritime multi-corner reflectors.In order to solve the problem of a large amount of calculation traditional methods,a theory of hybrid patch and fast projection according to Hepermesh is proposed for calculating the RCS of signal corner reflector at sea.Then,combined with the scattering center composition algorithm,the rapid algorithm is used to calculate average RCS value of maritime multi-corner reflectors laid at random.The results of checking this altorithm by use of the specific software FEKO show that the new algorithm can greatly shorten the computing time of calculating RCS of multi-corner reflectors under the prere-quisite of keeping its computing precision.