机载双站对地面辐射源时差定位误差分析

Analysis of Time Difference Location Error of Airborne Dual-station to Ground Radiation Sources

针对空中平台对地面辐射源定位的场景,利用辐射源到达空中机载平台的到达时间差和方位角对辐射源进行定位,基于机载平台的姿态角误差,建立机载双站协同测向时差定位模型,通过计算仿真分析了姿态角误差、测向误差以及到达时差的误差对定位精度的影响。本文的研究对于机载双站协同测向时差定位的工程应用有一定的参考意义。

Aiming at the scene that the air platform locates the ground radiation sources,this paper performs the location to the radiation sources by using the time difference of arrival(TDOA)and azimuth angles that the radiation sources arrive at the airborne platforms,and establishes the time difference location model of airborne dual-station collaborative direction finding based on the attitude angle error of airborne platform,analyzes the influence of attitude angle error,direction finding error and TDOA error on the location accuracy through the calculation and simulation.The research of this paper has a certain reference significance for the engineering application of time difference location for airborne dual-station collaborative direction finding.