| China is vigorously developing lunar exploration mission, which is inseparablefrom the monitoring and control communication system, and the constellation is anessential link in the entire system. Lunar relay satellite constellation is composed by oneor a few lunar relay satellites, they form a fixed spatial geometry.With the deploymentof the constellation, China can provide coverage of various degrees on the front or theback of the lunar communications. Orbit determination is the process of valuation of theorbital elements.Measurement data with error and not a precise equation of motion areused statistical principles Orbit determination can get the state of motion of the lunarrelay satellite at any time in the past, current and future period of time.Therefore, theorbit determination is the basis of orbital tracking, orbit control and application.orbitdetermination.The main work of this paper is to study the lunar relay satellite orbit determinationalgorithm,We provide accurate position and velocity information for lunar relaysatellite, so We can provide the reference data of the orbit control to the relaysatellite,And provide navigation and data relay services to the lunar spacecraft orastronauts, mechanical environment of the lunar satellite is complex,Therefore we cannot directly copy the Earth satellite orbit determination methods. In order to achievedetermine precise orbit,We study satellite two-body or three-body dynamics modelof the lunar relay and We establish the appropriate observation model.We choose orindependently research appropriate orbit determination system.The purpose of this thesis is to study Lunar relay satellite dynamics and orbitalcalculation method of the two-body system and the round restrictions three-bodysystem dynamics of lunar relay satellites and orbital calculation method.; The aim is toestablish lunar relay satellite observation model.We study the parameters valuationmethods of the lunar relay satellite orbit.Specific research are:(1) the establishment ofa lunar the relay satellite orbit dynamics model;(2) the establishment of a lunar relaysatellite observation model;(3) study the lunar relay satellite orbit determination methods. Reference to the United States National Aeronautics and Space Administrationand China’s satellite orbit determination theory and orbit determination, in accordancewith the different types of satellite orbits, the coordinate system and time system,satellite force model, the orbit determination observational model, an initial orbit aswell as the orbit improved method other aspects of the ring lunar orbit, Lagrange pointorbit orbit determination corresponding orbit determination theory the inductive andsimulation work.The simulation results show that the batch orbit determination and Kalman filteringreal-time orbit determination algorithm can reach a higher orbit determination accuracy.It also fully have to prove that orbit determination algorithm of the lunar relay satellitedesign is feasible. |
