直角坐标系中雷达测量方差的计算方法分析  

Analysis on Calculation Method of Radar Measurement Variance in Rectangular Coordinate System

作　　者：刘嗣勤 LIU Si-qin(91550 Forces,Dalian 116023,Liaoning)

机构地区：[1]91550部队,辽宁大连116023

出　　处：《电脑与电信》2020年第9期71-74,共4页Computer & Telecommunication

摘　　要：多雷达目标监测的分布式组网系统中,通常包含以雷达为坐标原点的极坐标系,以指挥中心为坐标原点的直角坐标系,但由于不同雷达周边空域环境、雷达设备等较为复杂的情况,单雷达对目标距离、方位和仰角的测量,容易出现较大的样本标准偏差。这一情况下,依据构建的统一直角坐标系,以及目标位置误差传递法、综合指标统计学法等计算方法,对目标对象不同坐标分量,展开测量权值、方差与标准差的统计分析;再利用多雷达航迹加权融合模型,对有限个雷达测量点,在直角坐标系中的垂直加权估计值进行验证,进而确定目标各要素状态的结果值。The distributed network system of multi radar target monitoring usually includes polar coordinate system with radar as coordinate origin and rectangular coordinate system with command center as coordinate origin.However,due to the complex situation of different radar surrounding airspace environment and radar equipment,large sample standard deviation is prone to occur in the measurement of target distance,azimuth and elevation angle by single radar.In this case,according to the unified rectangular coordinate system,target position error transfer method,comprehensive index statistics method and other calculation methods,the measurement weight,variance and standard deviation of different coordinate components of the target object are analyzed statistically.After that,the weighted fusion model of multi radar tracks is used to verify the vertical weighted estimation value of limited radar measurement points in rectangular coordinate system,and then the result value of each element state of the target is determined.

关 键 词：直角坐标系 雷达 测量方差 计算方法 

分 类 号：TN953[电子电信—信号与信息处理]