“红外卫星-地基雷达”航迹融合算法的实现及精度分析

为提高对助推段弹道导弹轨迹跟踪的精度，设计一种“红外卫星-地基雷达”航迹融合算法。通过建立传感器量测和航迹融合的仿真模型，结合凸组合融合法和协方差交集法，分别实现了实现天波超视距雷达和红外预警卫星配准后航迹数据的融合，以及天波超视距雷达和红外预警卫星配准后航迹数据的融合。通过仿真证明了在进行航迹融合后的跟踪结果较SBIRS单独的跟踪结果精度更优。本文设计的凸组合融合法和协方差交集法的跟踪结果精度可以满足针对弹道导弹的早期预警需求。

Implementation and accuracy analysis of track fusion algorithm for infrared satellite and ground-based radar

In order to improve the trajectory tracking accuracy of the ballistic missile trajectory, a new method of track fusion for infrared-satellite&ground-radar is designed.Through sensor measurement and track fusion based simulation model, combined with the convex combination fusion algorithm and covariance intersection method, respectively, to achieve the realization of sky wave over the horizon radar and infrared early warning satellite registration after the track data fusion, as well as skywave over the horizon radar and infrared early warning satellite with quasi track data fusion. The results of the simulation show that the tracking results are better than the SBIRS tracking results. The results of the convex combination method and the covariance intersection method can meet the early warning of ballistic missile.