基于地面电台的双站无源定位算法及精度分析  

The Passive Location Algorithms Based on Ground Double Radio Stations and Its Precision Analysis

作　　者：陈炜军[1] 景占荣[1] 屈保平[1] 张曦[1] 

机构地区：[1]西北工业大学电子信息学院,西安710129

出　　处：《火力与指挥控制》2011年第2期28-32,共5页Fire Control & Command Control

基　　金：航天科技创新基金(N7CH0003);航天支撑技术基金资助项目(N7CH0004)

摘　　要：提出了一种基于地面电台的双站无源定位导航的新方法,该方法不同于对目标辐射源定位的传统的测向交叉定位法,而是用于运动载体自身定位的新算法,其同GPS系统和IN S系统(惯导系统)一样是一种独立的定位系统。建立了该定位方法的数学模型,重点分析了其定位精度,推导了定位误差表达式,仿真分析结果表明该算法对低空飞行运载体有较高的定位精度,也具有较高的理论价值和实用价值。A new method of passive location and navigation which is based on double ground radio station is advanced. The method is differ from traditional orientation overlapping location, it is not used to position radiation source,but to position moving carrier self. And the method is a self-governed location system the same as GPS and INS（Inertia Navigation System）. The paper establishes the mathematics model of this location method and deduces its expression of position error, and the positional accuracy of this method is key to be analyzed in the last. Simulation result shows that this algorithm has better positional accuracy for moving carrier flying in low altitude and has high theoretic value and practical value.

关 键 词：无源定位 航向角 相对方位角 定位精度几何稀释度 

分 类 号：TN971[电子电信—信号与信息处理]