BeiDou navigation satellite precise orbit determination is one of the key technologies in BeiDou satellite navigation system application. To analyze the no-modeling system error in BeiDou navigation satellite system, this paper proposes Ensemble Empirical Mode Decomposition (EEMD) and Hilbert spectrum method for orbit determination residual feature extraction. Firstly, the feature extraction principle of EEMD and Hilbert spectrum is analyzed, and the method model of feature extraction is established, then Pseudo-range and carrier phase orbit determination residuals in BeiDou satellite navigation system are analyzed, finally, the proposed method is applied to multi-stations GEO receiving multiple BeiDou navigation satellite signals for the orbit residuals analyzing. The results show that the proposed method can accurately extract the 86,400 s period feature which is closely related to the time period items with one day in the BeiDou orbit residuals. It is very important for separating the no-modeling system error in BeiDou navigation satellite orbit determination residuals for improving the orbit determination precision.
Research on Feature Extraction Method of No-Modeling System Error in BeiDou Orbit Determination Residual
2014
13 Seiten
Aufsatz (Konferenz)
Englisch
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