基于杂波多普勒相位估计补偿的AMTI方法

An AMTI Method Based on the Estimation and Compensation of the Clutter Doppler Phase

提出了一种在无杂波图和杂波对消系数条件下的自适应杂波对消算法。该算法采用自适应双门限方法进行杂波区的定位,再针对有杂波的距离单元,采用最小功率准则进行多普勒相位补偿,从而完成对运动杂波的对消。通过仿真证明,该方法可有效地抑制运动杂波,并检测出淹没在运动杂波中的目标信号。

This paper provides an algorithm of automatic adaptive clutter suppression in the absence of a clutter map and clutter cancellation coefficients. First, the algorithm uses double thresholds to determine the clutter positions of a frame of signals. Then the range cells which contain clutter are compensated by Doppler phase compensation coefficients which are picked out by the minimum power rule. Finally, the moving clutters are cancelled by using the optimal Doppler phase compensation coefficient. Simulation shows that the method can effectively suppress moving clutter and detect the target submerged by clutter.