扩展底面角反射体RCS特性分析及其应用

RCS Analysis and Application of Extended Ground Plate Trihedral Reflectors

三角形角反射体用于海面靶标中,存在一些问题:在低俯仰角情况下,其RCS特性易受海面环境的影响,RCS值显著下降。针对这些问题,分析了底面无限扩展的三角形角反射体的RCS特性,给出了相应的几何光学计算公式,公式应用到扩展底面角反射体中,将其计算结果与标准角反射体进行了比较,结果表明扩展底面角反射体在低俯仰角情况下,能够增强目标的RCS值。在低弹道导弹试验任务中,可以考虑采用扩展底面角反射体来替换标准角反射体。

When triangular trihedral reflector is used for sea surface target,its RCS characteristic is easily affected by sea environment,and the RCS value decreases quickly at low grazing angles.To solve these problems,the RCS of an infinite ground plate trihedral reflector is analyzed,and a computing formula is given,with which the RCS of a finite extended ground plate trihedral reflector can be computed.The computing result is compared with that of a standard trihedral reflector,which shows that a finite extended ground plate trihedral reflector has a higher RCS at low grazing angles.Therefore,finite extended ground plate trihedral reflectors can be considered to replace triangular trihedral reflectors in test tasks of low ballistic missiles.