单站球面近场散射测量方法研究

Study of Monostatic Spherical Near-Field Scattering Measurement Method

本文提出了一种单站球面近场散射测量方法,通过对待测目标进行近场球面扫描,获取单站散射近场数据后,利用近远场变换算法即可得到远场单站RCS。以理想导体圆柱作为待测目标,对该测量方法进行了计算机模拟。计算结果表明,通过近远场变换算法得到的远场单站RCS与直接利用电磁仿真软件FEKO计算得到的远场单站RCS吻合良好,从而验证了该测量方法的正确性和有效性。

A spherical near-field measurement technique for predicting far-field monostatic RCS of targets is studied. The monostatic scattered near-field data are obtained by spherical scanning toward the target under test and the far-field monostatic RCS can be obtained by near-field to far-field transformation algorithm. With the perfect conductor cylinder as the target under test, the computer simulation of this measurement technique is performed. The calculation results show that the far-field monostatic RCS obtained by near-field to far-field transformation algorithm agree with the far-field monostatic RCS calculated directly by EM simulation software FEKO well, which proves the correctness and validity of this measurement technique.