单星只测角对低轨卫星的EKF跟踪分析

EKF Tracking of Low Earth Orbit Satellites Based on Bearings-Only Data of A Single Space-Based Platform

利用扩展卡尔曼（EKF）滤波原理研究基于天基光学平台对低轨卫星的跟踪问题，根据单星只测角观测值建立了相应的状态模型和观测模型，并进行低轨卫星的跟踪仿真，结果表明：该方法可以获得较高的跟踪精度，这使得基于单星只测角星上滤波跟踪成为可能。

This paper uses Extended Kalman Filter （EKF） in research on tracking of low earth orbit satellites with a single space-based optic platform. Two different observation models are established based on bearings-only detection data. Tracking simulation of a LEO satellite is performed and high tracking accuracy is demonstrated during the simulation. This makes possible bearings-only on-beard filter tracking for a single satellite.