An efficient method to correct target range migration

In weak target detection, migration through range cells (MTRCs) of the moving targets with high velocities would affect the performance of long time coherent accumulation. To eliminate this effect, we may correct the MTRCs corresponding to the Doppler unambiguous part and ambiguous part respectively. Based on this thought, an improved algorithm is proposed in this paper, which gets the ambiguity numbers of multiple targets and corrects their MTRCs effectively. Then the energy of targets can be accumulated coherently in the end. Performance of simulations verifies the value of this algorithm.