采用级数反转推导收发分置SAR二维点目标频谱的方法

Way to derive two-dimensional spectrum for bistatic SAR using series reversion

概述:本文采用级数反转的方法,对任意收发分置合成孔径雷达的两维点目标频谱进行推导。通过采用级数反转法,可利用固定相位及傅立叶变换推导得出二维点目标的频谱。频谱的精度通过在两级数扩展中保留足够的项目数来进行控制。最后,文章对单点目标进行了仿真,证实了收发分置雷达的二维点目标频谱可通过将收发分置距离等式用指数级数的形式表示,并通过在方位频率函数中采用级数反转法来表达方位时间而获得。

This paper derives the two-dimensional point target spectrum for an arbitrary bistatic synthetic aperture radar configuration. By using progression reversion,the method utilizes stationary phase and Fourier transform pairs to derive the point target spectrum. The precision of the spectrum is controlled by keeping enough terms in the two progression expansions,and is verified with a point target simulation. It shows that the method is viable and it can be achieved by progression reversion in functions of azimuth frequency to express the azimuth time.