With high angle and range resolution, the imaging laser radar is capable of producing range and intensity image of the target at the same time to form high resolved angle-angle-range-intensity images. In this paper, an ameliorated correlated algorithm is presented based on MAD and SSDA. At last, the ability to distinguish similar object and to expand self-adaptively as the target become larger, tracking experiments are given under different carry noise ratio (CNR). The results show that in the present scene, the algorithm gives preferable tracking performance. No failure of tracking the target occurred and most single-frame absolute errors are sub-pixel, all of the absolute errors are below 4 pixels.