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无源定位精度作为对目标定位最为核心的一个技术指标,其定位技术方法有测向/交叉定位法、单站快速定位法、比相定位法、测时差定位法、测向/时差定位法、多普勒频率定位法、方位和频率定位法、相位差变化率和多普勒变化率定位法等。同时,比幅测向误差、定位模糊区、系统随机误差、定位站配置与布站方式、多径传输、时差、多普勒频移等多种因素均会对定位精度产生影响。文中主要探讨无源定位的分类及技术方法,分析多种误差影响无源定位精度的原因,以及减小影响无源定位精度的方法。
Passive positioning accuracy as a target of the most targeted positioning of a technical indicators, the positioning technology methods are direction / cross positioning method, single station rapid positioning method, the phase positioning method, the time difference positioning method, the direction / time difference positioning method, Doppler frequency localization method, orientation and frequency localization method, phase difference change rate and Doppler change rate localization method. In the meantime, many factors such as the ratio error of direction finding, fuzzy positioning area, systematic random error, collocation of positioning stations and distribution methods, multipath transmission, time difference and Doppler frequency shift all affect the positioning accuracy. The paper focuses on the classification and technical methods of passive location, analyzes the reasons why many kinds of errors affect the passive location accuracy, and reduces the impact of passive location accuracy.