To deal with the clutter edge at the boundary between a block of intensive clutter and a block of weak clutter, based on the variance index, a CFAR target detection method is proposed.

• 针对杂波边沿的非均匀性,基于变量索引CFAR方法研究了UWB-SAR图像中强弱杂波边沿处的CFAR检测问题,实现了在杂波边沿处的CFAR目标检测;