一种稳健的机载前视阵雷达杂波谱补偿方法

Robust clutter spectrum compensation algorithm for forward looking airborne radar

针对空间角频移前视阵杂波谱补偿方法将参考距离单元的杂波谱旁瓣抬高，导致旁瓣区动目标检测性能下降的缺点，提出了一种改进的空间角频移方法．先对各个距离单元回波进行多普勒频率补偿，然后再进行空间角频移．仿真实验结果表明，本方法在旁瓣区比空间角频移方法有3～5aB的性能改善，并且在雷达回波存在误差的情况下仍然能够保持好的性能．

In this paper, a new approach to spatial angle frequency shifting spectrum compensation for forward looking radar is proposed. The algorithm compensates the clutter Doppler frequency for the range cell before using spatial angle frequency shifting, which overcomes the problem of decreasing moving target detection performance, caused by the spatial angle frequency shifting algorithm to enhance the sidelobe of the reference range clutter spectrum. Experimental results show that the improved algorithm can obtain obviously better performance than spatial angle frequency shifting, without performance loss under radar clutter with some uncertain errors.