空间目标天基光学监视平台的参数仿真分析

Parameter simulation and analysis of space-based optical surveillance platform for space object

利用天基光学系统对空间目标进行监视是重要而有效的手段之一。以在轨运行的低轨卫星为研究对象,对天基光学平台的观察方向、升交点赤经和真近点角等参数进行了优化设置。通过分析可知,观察方向指向左和指向右时可以监视更多的目标,升交点赤经选取在0°、270°和315°对空间目标的监视效果较好,而卫星被截获的概率与真近点角的变化关系并不密切,因此真近点角可以任意选取。根据参数优化结果,以卫星仿真工具包STK(Satellite Tool Kit)为平台,对空间目标天基光学监视平台的轨道参数进行了仿真。

Surveillance to space objects using space-based optical system is one of the important and effective approaches.Based on low satellites on orbit,some parameters of space-based optical system such as observation direction,Right Ascension of the Ascending Node(RAAN) and True Anomaly are set and optimized. Based on the analysis we can conclude that more objects can be observed while observation direction pointing to the right or the left and while RAAN being 0°,270°or 315°.Also,we can select any value for True Anomaly because the intercepted probability of satellite is not so fluctuant with the variation of True Anomaly.On the basis of the result and STK(Satellite Tool Kit) platform,the orbital parameters of space-based optical surveillance platform are simulated.