基于多电视台子孔径综合的无源雷达成像算法

该文提出一种基于多电视台子孔径综合的无源雷达成像算法。该算法通过单个接收机接收来自位于不同视线角的多个电视台的反射信号，将目标小角度转动时得到的各电视台回波形成的所有子孔径综合为等效大孔径的方法来对运动目标进行成像。该算法利用电视台的载频信号，相关计算简单，在电视台分布密集的区域，目标小角度转动即可成像。仿真结果证实了该算法的有效性。

Passive Radar Imaging Algorithm Based on Sub-apertures Synthesis of Multiple Television Stations

A passive radar imaging algorithm is presented in the paper. Receiving the reflected signals from multiple television stations located at various aspect angles, the algorithm can image moving object by synthesizing multiple sub-apertures of the television stations which are induced by the small angular rotations of the object into a wide-angle equivalent aperture. In addition to the low complexity in computation, the algorithm only uses the carrier waves of television stations while requires a small rotation angle of object in the area where dense television stations are available. Finally, the theoretical validity is illustrated by simulation results.