基于相位编码信号的多目标参数测量方法  

Parameter Measurement of Multiple Targets Using Phase-Coded Signals

作　　者：张孟达[1,2] 余颖菲 ZHANG Mengda;YU Yingfei(The 38th Research Institute of CETC,Hefei 230031;Key Laboratory of Aperture Array and Space Application,Hefei 230031)

机构地区：[1]中国电子科技集团公司第三十八研究所,合肥230031 [2]孔径阵列与空间探测安徽重点实验室,合肥230031

出　　处：《火控雷达技术》2023年第3期38-42,共5页Fire Control Radar Technology

摘　　要：多目标的高精度参数测量是跟踪雷达的一个难点。由于线性调频信号存在距离-多普勒耦合,在多目标跟踪时需要对每个目标速度进行补偿,而多个目标的速度补偿存在难以匹配的问题。本文提出了一种基于legendre序列的相位编码信号处理方法,可同时实现对多目标的距离和速度测量。该方法利用距离开窗的有限长度在时域进行搜索,相对于传统的频域搜索,实现简单、便于并行处理,且能够提高速度的测量精度。仿真结果验证了该方法的可行性和有效性。High-precision parameter measurement of multiple targets is a challenge to tracking radar.Due to the range-Doppler coupling of the chirp signals,the velocity of each target needs to be compensated during multi-target tracking.However,the velocity compensation of multiple targets is difficult.In this paper,a method of phase-coded signal processing based on Legendre sequence is proposed,which can measure the range and velocity of multiple targets simultaneously.The proposed method uses the finite length of the range window to search in the time domain.Compared with the traditional frequency domain search approach,the proposed method is simple to implement and convenient for parallel processing.In addition,it can improve the velocity measurement accuracy.The simulation results prove the feasibility and effectiveness of the proposed method.

关 键 词：多目标测量 相位编码信号 legendre序列 

分 类 号：TN95[电子电信—信号与信息处理]