讨论了空地反辐射导弹(ARM)中应用的机载单站对固定辐射源的无源定位问题,采用方位角及其变化率和俯仰角的测量信息,建立状态模型和观测模型,运用EKF算法,实现了对雷达目标的定位与跟踪。Monte-Karlo仿真表明,观测器与目标距离在一定范围内变化时,随观测次数增加,两者的相对距离误差变化曲线收敛到一个较小的数值,说明载机观测器对目标的定位跟踪达到了较高的精度。

The problem that passive location to a fixed emitter with an airborne single observer applied in air-to-ground anti-radiation missile (ARM) was discussed. The measurement information of the azimuth and its change rate was introduced, the status model and the measurement model were established, the EKF algorithm was applied, and the location and track of the radar target were realized. Monte Carlo simulation shows that if the distance between the observer and the radar changes within a certain scale, the curve of the relative error of its distance varies to convergence at a small value in the wake of the times of observation increasing. It illuminates that the location and the track of the target acquired by the airborne observer reaches a superior precision.