摘要
在测量点散射单元为球体的两点目标的后向散射时发现，它的后向角闪烁可以通过直接求后向散射回波相对相位测量数据关于入射角的导数而得到，为了揭示这一实验现象所隐含的内在规律，本文提出了一个具有典型意义的各矢量Ｎ点目标模型用来进行相关的研究。理论结果表明，在一定的条件下，角闪烁的后向值与后向散射回波相对相位对入射角的导数之间存在等效性。本文的研究不仅澄清了某种对角闪烁概念的误解，而且也为在没有双站测试能力的情况下仅利用后向散射测量获取角闪烁提供了理论依据。
From the backscattering measurements of a two-point target consisting of two spheres,it is found out that the backward angular glint can be obtained by evaluating the derivative of the measured data of backscattering echo relative phase vs incident angle.A representative vector model of a N-point target consisting of N anisotropic scattering elements is proposed and investigated to reveal the inherent law implied by the experimental phenomenon. The theoretical results show that, under given conditions,there exists equivalence between the backward angular glint and the derivative of backscattering echo relative phase with respect to incident angle. This work not only clears up a misunderstanding on the concept of angular glint ,but also provides theoretical basis for obtaining angular glint by backscattering measurement in the case of no bistatic measurement capability.
出处
《电子学报》
EI
CAS
CSCD
北大核心
1996年第9期36-40,共5页
Acta Electronica Sinica
基金
中国博士后科学基金
电子科技大学青年基金
关键词
回波相位
角闪烁
雷达目标
电磁散射
Echo phase ,Angular glint,Radar target, Electromagnetic scattering
