基于包络补偿的对称三角线性调频连续波雷达多目标参数估计方法  

Multi-target Parameter Estimation in Symmetry Triangular LFMCW Radar Based on Envelope Compensation

作　　者：刘奇勇[1] 罗迎[1] 高尚伟 欧阳成 张群[1] 

机构地区：[1]空军工程大学信息与导航学院,陕西西安710077 [2]电子信息控制重点实验室,四川成都610036

出　　处：《电子学报》2016年第3期541-547,共7页Acta Electronica Sinica

基　　金：国家自然科学基金(No.61201369;No.61172169);陕西省自然科学基础研究计划项目(No.2013JQ8008)

摘　　要：多目标参数估计是对称三角线性调频连续波(STLFMCW)雷达运动目标检测中的一个难题.文章提出了一种利用包络走动现象来实现多目标参数估计的方法.首先建立了多目标的运动模型,通过分析目标的回波信号,推导得出了引起包络走动的误差因子;其次,通过正、负调频峰值配对得到了包含目标速度信息的速度矩阵,利用速度矩阵中的速度对回波信号进行包络补偿,并将补偿后的峰值进行重新配对,得到了模糊目标信息;最后通过剔除虚假目标,获得了准确的目标信息.仿真实验验证了所提方法的准确性和有效性.M ulti-target parameter estimation is a difficult problem in moving target detecting of symmetry triangular linear frequency modulation continuous w ave（ STLFM CW） radar. A method for multi-target parameter estimation,w hich mainly uses the envelope migration,is proposed. Firstly,the motion model of multi-target is established,and the error factor w hich causes envelope migration is derived by analyzing the echo signal of the targets. Then,the velocity matrix,w hich contains the velocity information of targets,is obtained by pairing the peaks value of positive frequency modulation signal and negative frequency modulation signal. Furthermore,the ambiguous targets can be detected by using the velocity matrix to achieve the echo＇s envelope migration compensation and then re-pairing the compensated peaks. Finally,the targets accurate information is obtained by rejecting the false targets. The effectiveness of the proposed method is demonstrated by simulations.

关 键 词：多目标 参数估计 对称三角线性调频连续波 峰值配对 

分 类 号：TN957.51[电子电信—信号与信息处理]