时差无源定位测高性能分析

现代战争反辐射导弹对有源定位系统的生存提出了严重挑战,无源定位系统发挥越来越重要的作用,定位精度是无源定位系统的重要指标,特别是高度测量精度。文中对时差无源定位系统中目标高度测量模型进行分析,结合斜距估计模型的模糊解问题,给出目标在不同高度对应的不模糊斜离解析解的取值准则,基于仿真模型验证准则的有效性,可大幅提升无源定位系统远距离定位精度;最后,文中无源定位系统高程“拐点冶给出测高精度与目标高度和距离的关系,具有较高的工程价值。

Performance Analysis of Height-finding for Passive Localization System

Height-finding performance is a key factor to the passive localization system, the localization based on time difference of arrival(TDOA) measurements is an important topic in the passive localization technique. In this paper, the height-finding model of passive localization system is analyzed in the first step; and then combined to the distance ambiguity model, the distance-height principle is proposed to get correct range and elevation solution; finally, the relationship between elevation-accuracy and target location is carried out. Simulation results show reference value in engineering application.