基于超定方程组的分布式相参雷达标校方法  

Distributed phase-coherent radar calibration method based on overdetermined equations

作　　者：刘浩 吴道庆[1] 蒋跃红[1] LIU Hao;WU Daoqing;JIANG Yuehong(Nanjing Research Institute of Electronics Technology,Nanjing 210039,China)

机构地区：[1]南京电子技术研究所,南京210039

出　　处：《空军预警学院学报》2020年第1期18-20,30,共4页Journal of Air Force Early Warning Academy

摘　　要：分布式相参雷达系统的标校是其开展工程应用的关键前提.针对X波段双站分布式雷达信号波长短、标校精度要求高等难点,通过挂飞标准铝球的方法,建立超定方程组,并利用超定方程组的最小二乘解法,求得双站的相对位置坐标和双站间初始相位差.该方法避免了使用传统光学标校手段带来的较大相位误差,具有精度高、可操作性强等特点.仿真结果表明,经过标校后,双站分布式雷达能够满足实际应用的要求.The calibration of distributed coherent radar system is the key premise of its engineering application.This paper aims at the difficulties such as short signal wavelength,high requirement of calibration accuracy,etc.in X-band dual-station distributed radar to establish the overdetermined equations by means of flying standard aluminum ball,and then uses the least square method of the overdetermined equations to obtain the relative position coordinates and the initial phase difference between the two stations.The proposed method,which avoids the relatively large phase error caused by the traditional optical calibration method,has the characteristics of high precision and strong operability.Simulation results show that after calibration,the dual-station distributed radar can meet the requirements of practical application.

关 键 词：分布式雷达 超定方程组 系统标校 

分 类 号：TN958[电子电信—信号与信息处理]