双机TDOA/DD无源定位方法

Two Aircraft TDOA/DD Passive Localization

摘要: 利用辐射源信号到达两架飞机的时差(TDOA)与微分多普勒(DD)的组合TDOA/DD对该辐射源进行无源定位,给出了定位算法,推导了定位误差解析表达式。按等时差与等微分多普勒曲线表达式绘制了双机TDOA/DD定位的双曲线与微分多普勒曲线。用定位误差解析表达式,对TDOA/DD定位与测向定位的误差进行了分析和对比,显示了TDOA/DD定位方法的优良性能。

Abstract: A stationary electronic emitter can be located by two aircraft from Time Difference Of Arrival (TDOA) and Differential Doppler(DD) measurements. The algorithm and error analytic expression of localization are given. Several curves of constant TDOA and DD are shown. The comparison of localization based on TDOA and DD is presented. The result indicates the previous approach performance is better.