Abstract:

In radar multi-target detection, the weak target is almost covered by the strong target nearby because of its low energy, which badly influences the detection of weak targets. A novel detection algorithm for weak radar targets is proposed to cope with the situation above. First, the strong target echo is integrated coherently and its amplitude is estimated by the combination of Keystone transform and the least square filter. After that, the strong target echo is reconstructed and then cleaned from the original echo. Finally the remaining echo is integrated coherently for the detection of weak targets. The experimental results validate the effectiveness and advantages of the proposed algorithm.