线性FMCW雷达动目标一维距离像运动补偿

线性FMCW雷达是一种高距离分辨率雷达,运动补偿是其实现距离高分辨率的核心技术.采用多重复频率波形,提出一种多普勒频率串算法,从模糊的速度估计中恢复目标的真实速度,采用运动补偿得到高分辨的距离估计.同时为解决多目标分辨的问题,采用一种基于目标均方误差的配对算法.仿真结果表明多普勒频率串算法较中国余数理论对速度估计的性能有了明显的提高,充分说明了DFC算法的有效性.

Motion compensation of 1-D range profile for linear FMCW radar

Linear FMCW radar is a kind of high-range-resolution radar, and motion compensation is a key problem to realize high range resolution. A multiple repetition frequency waveform is adopted and a Doppler frequency cluster (DFC) algorithm is proposed, which is capable of recovering true velocity from the coupled velocity estimation directly. Aiming at solving resolution of multiple targets, a match algorithm based on mean square error is also proposed. The combination of the above two methods realizes distance and velocity decoupling for multiple moving targets. The result of simulation verified the effectiveness of the methods, the velocity estimate performance of DFC algorithm improve obviously contrast to Chinese remainder theorem.