基于运动平台的多普勒频移无源定位算法

A Doppler Frequency Shift Passive Location Algorithm Based on Moving Platform

无源定位能力是现代电磁频谱战的要素之一,侦察设备实现对雷达辐射源的高精度快速定位,是保障作战致胜的重要环节。基于运动平台的无源侦察设备,提出了一种多普勒频移算法,深入研究了相对运动时信号多普勒频率与目标位置的变化特性,对雷达目标进行定位。该算法兼顾了定位时效性与雷达扫描周期等因素,能够提高截获数据利用率,提升对目标雷达的定位精度。

Passive location capability is one of the elements in modern electromagnetic spectrum warfare,and it is an important link ensuring the combat victory for radar reconnaissance equipments to achieve high-precision and rapid positioning of emitter sources.Based on the passive reconnaissance equipment of moving platform,this paper proposes a Doppler phase shift algorithm,deeply studies the changing characteristic between Doppler frequency and target position during relative motion,performs location to the radar target.The algorithm takes into account the positioning timeliness and radar scanning period,etc.,can improve the utilization rate of intercepted data and the location accuracy of target radar.