雷达时差和系统误差的联合估计方法  

Joint Estimation for Time Offset and Radar System Error

作　　者：吴泽民[1] 任姝婕[2] 

机构地区：[1]解放军理工大学通信工程学院,江苏南京210007 [2]解放军理工大学理学院,江苏南京210007

出　　处：《兵工学报》2011年第7期847-852,共6页Acta Armamentarii

基　　金：国家自然科学基金资助项目(60672080)

摘　　要：提出一种联合估计雷达时差和系统误差的方法。该方法假设公共目标做匀速直线运动,建立了不同雷达对公共目标的探测位置差与时差和探测系统误差的关系,并以此给出了线性最小二乘法估计。针对多雷达组网的应用场景,设计了基于方差加权的估计融合算法,提高了公共目标较少情况下的联合估计性能。通过仿真验证,该联合估计算法在航迹相关算法容忍的时差范围内,能准确估计时差。A joint estimation algorithm for time offset and radar system detection errors is proposed in this paper.Assuming that the target moves in uniform linear motion,the relationship among detected target position differences,time offset and radar system error is established,and a linear least square estimation algorithm is presented.For multi-radar application situation,a variance-based weighted fusing algorithm is especially designed,and it can promote the joint estimation performance with fewer common targets.The simulation results show that the precision of estimated time offset is guaranteed once it＇s under tolerance of track correlation algorithm.

关 键 词：雷达工程 数据融合 时间同步 系统误差 配准 最小二乘 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]