Modeling and Application of COMPASS Satellite Orbits and Clocks Predicted Correction
- 1.5k Downloads
To evaluate the satellite orbit and clock errors of COMPASS, we compare the difference between broadcast ephemeris and precise orbits and clocks. Results show that the orbit errors present certain periodicity for GEO and IGSO satellites. The SISRE of COMPASS is larger than GPS and GLONASS overall. However, the broadcast ephemeris of COMPASS appears regular changes in short time. Based on this, we establish different rapid correction models for COMPASS satellite orbits and clocks error. Analysis proves that the result performs well when the length of the arc for the model is shorter than 30 min, and the linear model is best for satellite clock corrections. By using this model, we predict the corrections of the satellite orbits and clocks, which is used for pseudo-range and carrier phase positioning. Results show that the positioning accuracy is on the same level with precise products for pseudo-range and carrier phase, while the convergence time is longer. This research provides an important basis for the realization of sub-meter wide area augmentation of COMPASS.
KeywordsBroadcast ephemeris error Space-in-space range error (SISRE) Predicted model Single point positioning
This paper is supported by the 100 Talents Programme of The Chinese Academy of Sciences, the National High Technology Research and Development Program of China (Grant No. 2013AA122402), the National Natural Science Foundation of China (NSFC) (Grant No. 11273046 and 40974018), and the Shanghai Committee of Science and Technology (Grant No. 12DZ2273300, 13PJ1409900).
- 2.Wang D, Huang Z, Li R (2013) Integrity analysis of GPS signal-in-space error. In: China satellite navigation conference (CSNC) 2013 proceedings. Lecture notes in electrical engineering, vol 244. doi:10.1007/978-3-642-37404-3_17 Google Scholar
- 3.Li Z, Li Z, Ding W, Li Z (2008) Error analysis of orbit determined by GPS broadcast ephemeris. J Geod Geodyn 28(1):50–54Google Scholar
- 4.Guo F, Zhang X, Li X, Hu Q (2009) Precision analysis on orbit and clock of GPS satellites broadcast ephemeris. Geomatics Inf Sci Wuhan Univ 34(5):589–592Google Scholar
- 5.Guo J, Meng X, Li Z, Nie Z (2011) Accuracy analysis of GLONASS satellite broadcast ephemeris. J Geod Geodyn 31(1):68–71Google Scholar
- 6.Yang R, Ou J, Wen D (2006) GPS broadcast ephemeris error and its effect on positioning. J Geomatics 31(1):1–3Google Scholar
- 7.Huang W, Wang W, Xi X (2010) Spec spectral characteristic analysis and prediction model research of navigation satellite broadcast ephemeris errors. Chin Space Sci Technol 3:12–18Google Scholar
- 8.BeiDou navigation satellite system signal in space interface control document. http://www.beidou.gov.cn/attach/2012/12/27/201212275f2be9ad57af4cd09c634b08d7bc599e.pdf
- 9.Creel T, Dorsey A, Mendicki P, et al (2006) Accuracy and monitoring improvements from the GPS legacy accuracy improvement initiative. In: Proceeding of the 2006 national technical meeting of the institute of navigation (NTM 2006), PP 664–684 Google Scholar
- 10.Chen J, Wu B, Hu X, Li H (2012) SHA: the GNSS analysis center at SHAO. In: China satellite navigation conference (CSNC) 2012 proceedings. Lecture notes in electrical engineering, vol 160. doi:10.1007/978-3-642-29175-3_19 Google Scholar
- 11.SHA GNSS AC. http://www.shao.ac.cn/shao_gnss_ac/
- 12.Heng L, Gao X, Walter T, Enge P (2010) GPS signal-in-space anomalies in the last decade data mining of 400,000,000 GPS navigation messages. In: Proceedings of the 23rd international technical meeting of the satellite division of the institute of navigation (ION 2010), pp 3115–3122Google Scholar