Near-Spaceborne Three-Channel SAR Ground Moving Target Detection Method

This paper proposes a combined method of DPCA and ATI for three channels near-space SAR ground moving target detection. First, space filter is used between adjacent channels to resist static clutter and raise SCR by DPCA. After that based on the two space-filtered results, interference process is used between them, and interferogram is achieved. Then double threshold detection is practiced based on interferometric phase and magnitude to detect the moving target pixels. Using the proposed method, the precision of interferogram is raised due to the space-filter before interference process. And the double threshold detection can provide higher detecting probability and lower false alarm rate, in the meantime it can wide the range of detectable velocity. Computer simulations verify the effectiveness of this method.