对多目标的高精度参数测量是雷达面临的重要挑战。文中在分析线性调频信号距离-多普勒耦合效应的基础上,对传统的正负调频斜率脉冲信号实现单目标参数测量算法进行改进,提出一种利用多调频斜率合成脉冲信号实现多目标参数测量方法,解决了传统方法只能适用于单目标环境下的局限性,实现高精度多目标距离、速度测量,更好地抑制了虚假 目标的出现,有效解决了线性调频信号脉冲压缩带来的距离走动误差。仿真验证了该方法的有效性,且具有良好的测量精度和稳定的抗干扰性能。

High-precision measurement of multi-targets' parameters is an important challenge for radar. Based on the analysis of the linear frequency modulation(LFM) signal range-Doppler coupling effect, the traditional algorithm using positive and negative frequency modulation pulse signal to estimate the single target's velocity and range is improved. In this paper, a novel method is presented, using multiple chirp rate synthesized LFM pulse to measure the multi-targets忆parameters. It solves the limitations that the traditional method can only be applied to single-target environment, and achieves high precision of range and velocity measurement. It makes it convenient to compensate the LFM signal忆s distance error, and avoids those false targets. The computer simulation proves that the method is practical, and shows good measuring precision and stability robustness.

TN957.52