测时差定位的误差分析及表征方法  

Probability Ellipses Error Analysis of Time of Arrival Location

作　　者：李仙茂[1] 夏栋[2] 李敬辉[1] 王启峰[1] 

机构地区：[1]海军工程大学电子工程学院,湖北武汉430033 [2]海军航空工程学院青岛校区,山东青岛266000

出　　处：《现代防御技术》2013年第3期144-148,153,共6页Modern Defence Technology

基　　金：国家自然科学基金项目

摘　　要：测时差无源定位具有很高的测量精度,但是时差定位在不同的定位区域定位误差差异非常大,更为重要的是误差区域分布形状复杂,用传统的误差半径和误差面积都很难表征具体点误差在军事上的意义。引入了概率椭圆来表示目标的概率分布,可较好地表征不规则的误差分布,有很强的军事应用价值。并给出了目标处于不同位置时的概率椭圆算法。Time of arrival（TOA） passive location offers precise location, but the location errors are very different in different areas, and more importantly, the shape and distributing of error area is very complex. The error radius and error acreage cannot denote the significance well and truly for military ac- tions. The probability ellipse is introduced to describe targets＇ position error, it can denote location error of anomalistic distributing area, and is very useful for military affairs. In addition, the arithmetic for loca- tion errors in different areas is presented.

关 键 词：时差 无源定位 概率椭圆 误差分析 

分 类 号：TN953[电子电信—信号与信息处理]