一种逆V频率步进雷达的速度估计方法

分析了目标径向运动对频率步进雷达一维距离成像的影响,推导了回波信号各相位项在距离成像中的作用,研究了逆V步进信号正负步进帧之间距离成像的区别,并在此基础上提出了一种基于一维距离像相关的速度估计方法.详细介绍了该方法的原理及其处理流程,并对其速度估计性能进行了理论分析与仿真实验.仿真结果表明,该方法测速精度高,抗噪性能较好.与同类算法的对比分析表明该方法具有运算量小、便于实时处理的特点.

A Novel Velocity Estimation Method of Inverse V-Shape Stepped-Frequency Radar

The effect caused by target motion on one-dimension range profiles of stepped-frequency radar is analyzed.The function of the each phase item of echo signals on range profiles is derived.The difference of range profile between the step-up frame and step-down frame of inverse V-shape stepped-frequency signal is studied.Based on the analysis,a novel velocity estimation method based on correlation of one-dimensional range profiles is proposed.The principle and process flow of the method is introduced,and the performance of the method is analyzed and simulated.The computer simulation indicates that the method has good anti-noise performance and precision.The comparison with similar methods shows that the method has low computation cost and is convenient for real-time processing.