NDLI: Extended Integrative Combined Orbit Determination Models Based on Prior Trajectory Information and Optimal Weighting Algorithm

Content Provider	IEEE Xplore Digital Library
Author	Deyong Zhao Hongli Jia Jingjun Wang
Copyright Year	2008
Description	Author affiliation: Ordnance Eng. Coll., Shijiazhuang (Hongli Jia; Jingjun Wang) \|\| Nat. Univ. of Defense Technol., Changsha (Deyong Zhao)
Abstract	For multi-LEO combined orbit determination (COD) satellite-network based on space-based tracking telemetry and command (STTC) satellites, kinematic orbit information can be obtained only using the method of precise point positioning (PPP) based on observation models, but the results are not very precise because of observation data precision and GDOP of constellation. If kinematic orbit information of low earth orbit (LEO) can be taken full advantage of participating in dynamic precise orbit determination (POD) and making them achieve best matching, integrative COD models based on kinematic and dynamic information can be constructed to realize dynamic smoothness of kinematic information. Firstly, single LEO difference positioning model and the corresponding algorithm was designed, and integrative COD models were constituted based on kinematic and dynamic trajectory information. Then extended integrative COD models based on prior trajectory information considering nonlinear semi-parametric modeling of observation models errors and sparse parameters modeling of dynamic models were established, and the optimal weighting algorithm of multi-structural nonlinear COD models was designed. Theoretical analysis and simulation computation results show that COD weighting method based on prior trajectory information can realize LEOs dynamic information optimal matching with kinematic prior information, and can restrain nonlinear influence factor including measure models and ephemeris errors to the effects of POD precision by considering models errors modeling and dynamic models sparse parameters denotation.
Starting Page	218
Ending Page	223
File Size	527572
Page Count	6
File Format	PDF
ISBN	9780769533049
DOI	10.1109/ICNC.2008.222
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2008-10-18
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Algorithm design and analysis Satellite constellations Optimal Weighting Space technology Low earth orbit satellites Kinematics Computer errors Extraterrestrial measurements Integrative Combined Orbit Determination Models Nonlinear dynamical systems Optimal matching Global Positioning System
Content Type	Text
Resource Type	Article

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