地月系共线平动点探测器的星上轨道预报问题

针对定点在地月系共线平动点附近运动的探测器，研究其轨道预报问题，并探讨了星上外推预报时的力模型简化问题。首先定量分析了共线平动点L1和L2附近探测器的受力情形；然后构造了真实力模型下这些点附近的目标轨道并研究了其误差传播规律，指出这类轨道相比一般卫星轨道预报的不同特征；最后结合星上有限的计算和存储资源限制探讨了力模型的简化问题。此项工作可为定点在平动点附近的探测器的星上预报提供参考。

Onboard Orbit Prediction of Probes Around Collinear Libration Points in the Earth-Moon System

This paper studies the problem of onboard orbit prediction for probes around collinear libration points in the Earth-Moon system. First, perturbative forces acting on the probe in the real world were analyzed. Second, nominal orbits around these points are constructed and the error propagation properties of these orbits were analyzed. Differences in the orbit prediction between the libration point probes and traditional satellites were pointed out. Finally, due to limitations from onboard computation and storage resources, the force model for orbit prediction was simplified. Results in this paper can be referenced in the future if onboard orbit propagation around these points is necessary.