15 October 2009 Application of multi-source data fusion in navigation satellite autonomous orbit determination
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Proceedings Volume 7492, International Symposium on Spatial Analysis, Spatial-Temporal Data Modeling, and Data Mining; 74922B (2009) https://doi.org/10.1117/12.838838
Event: International Symposium on Spatial Analysis, Spatial-temporal Data Modeling, and Data Mining, 2009, Wuhan, China
Abstract
Aiming at the orbit floating or so called constellation rotation in navigation satellite autonomous orbit determination, an approach based on multi sources data fusion was introduced, that is to introduce angle observation from on board star sensor toward fixed star to fix the ascending node Ω, one of the six orbit elements so as to avoid constellation rotation. During data processing, a generalized measurement model based on matrix Cholesky decomposition and the method of measurement noises de-correlation was adopted. On the foundation of roundly analysis of present theories and methods of multi sources data fusion, and characteristics of multi sources measurement data fusion taken into account, two sorts of multi sources data fusion measurement models based on independent same distribution and correlation of measurement noises were conducted. Theoretical analysis and simulation experiment show that navigation satellite autonomous orbit determination based on multi sources data fusion can well solve the problem of orbit floating contrasting against that of only inter-satellite observations used.
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Fen Hou, Fen Hou, Hui Liu, Hui Liu, } "Application of multi-source data fusion in navigation satellite autonomous orbit determination", Proc. SPIE 7492, International Symposium on Spatial Analysis, Spatial-Temporal Data Modeling, and Data Mining, 74922B (15 October 2009); doi: 10.1117/12.838838; https://doi.org/10.1117/12.838838
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