Chirp子脉冲频率步进信号是一种距离高分辨率信号，目标运动对这种信号的影响很大，必须对其进行运动补偿。而现有的运动估计算法都要求具有较高的输入信杂比。在强地杂波背景下，文中采用了对消方法滤除地杂波。以满足后续的运动估计算法的要求，从而完成运动补偿，实现高距离分辨率。该文对这种方法进行了理论分析，并给出了仿真结果。

The chirp-subpulse stepped frequency radar signal is a signal of high range resolution. The target motion is a main factor influencing on synthetic range profiles, so velocity compensation is demanded. But velocity estimation algorithm demand high signal to clutter ratio. In strong ground clutter, the ground clutter is filtered by one-code canceller so as to satisfy the requirement of velocity estimation. The method is analyzed theoretically in this paper, and the results of computer simulation are in agreement with the analysis of theories.

TN957.51