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研究应用地月平动点轨道的深空导航星座的概要设计问题.首先,建立三体平动点动力学模型,给出计算平动点周期轨道族的微分校正算法,并介绍周期轨道的稳定性因子概念;然后,定义有效覆盖概念,分析实现有效覆盖的平动点导航星座的相关要素,给出设计步骤;在此基础上,分别从轨道选择、空间覆盖率、几何精度衰减因子、导航信号传输、导航精度等角度,对平动点导航星座进行设计、分析与估算,以全球定位系统为参照,通过综合对比分析,全面论证平动点导航星座的可行性,并给出技术指标与性能.研究表明:采用所设计的地月L3平动点Vertical轨道的5星星座可为地月空间各种飞行器提供有效覆盖的导航服务,在不考虑星座卫星等误差因素情况下,导航精度可优于10 m,并可随导航卫星数目增加而进一步提高.
This paper studies the general design of deep space navigation constellation using geostationary orbit orbit.Firstly, the dynamic model of three-body translation point is established and the differential correction algorithm for calculating periodic orbit families of translational points is given, and the stability of periodic orbits Then define the concept of the effective coverage and analyze the relevant elements of the navigation constellation of the translational point effectively, and give the design steps. Based on this, we choose the factors of orbit selection, space coverage, geometric precision attenuation factor, navigation Signal transmission and navigation accuracy, the navigation constellation of translational point is designed, analyzed and estimated. Based on the global positioning system, the feasibility of the navigation constellation of translational point is comprehensively demonstrated through comprehensive comparative analysis, and the technical indicators and The research shows that the 5-star constellation designed by using the straight orbit L3 of the ground-moving plane can provide effective coverage for all kinds of spacecraft in moon-space space. Without considering the error factors such as constellation satellites, the navigation accuracy can be Better than 10 m and can be further increased as the number of navigation satellites increases.