Abstract
Several analysis centers (AC) and a product integration and service center have been built by the international GNSS continuous Monitoring and Assessment System (iGMAS) currently. Product integration and service center (ISC) analyzes the quality of product provided by analysis centers, and then reprocesses to generate a combined product. The orbit and clock solutions are the vital products of ISC and important foundation data for satellite navigation and precise point positioning (PPP). First of all, this paper introduces the principles, methods and mathematical models of orbit and clock combination. Then, the precision of combined products and analysis centers’ products with respect to the IGS final is compared and analyzed. Furthermore, the PPP tests are implemented to verify the accuracy and reliability of combined orbit and clock. The results show that the RMS of combined orbit and clock with respect to referenced solutions is better than the most analysis centers. The static PPP tests prove that the combined orbit/clock consistency is maintained at millimeter level. The standard deviation of single epoch PPP difference using combined orbit/clock is comparable to the best AC orbit/clock solutions.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Similar content being viewed by others
References
Beutler G, Kouba J, Springer TA (1995) Combining the orbits of the IGS analysis centers. Bull Geodesique 69:200–222
Springer TA, Beutler G (1993) Towards an official IGS orbit by combining the results of all IGS processing centers. In: Proceedings of the 1993 IGS workshop, March 24–26, Bern, Switzerland, pp 242–250
Kouba J, Mireault Y, Lahaye F (1995) 1994 IGS orbit/clock combination and evaluation, Appendix I of the analysis coordinator report. International GPS service for geodynamics (IGS) 1994 annual report, pp 70–94
Springer TA, Zumberge JF, Kouba J (1998) The IGS analysis products and consistency of the combined solutions. In: Proceedings of the IGS analysis center workshop, Darmstadt, Feb 9–11
Kouba J, Springer T (2001) New IGS station and satellite clock combination. GPS Solution 4(4):31–36
Yao Y (2007) Theory and realization of GPS orbit integration. Geomatics Inf Sci Wuhan Univ 06:510–514
Feng L, Jia X et al (2010) A method of combining orbit by M estimation and dynamic smoothing. Scientia Sinica Phys, Mech & Astron, 603–607
Griffiths J (2012) A review of the IGS final orbit combination procedures, report from the analysis coordinator. http://acc.igs.org/
Ferland R, Piraszewski M (2009) The IGS-coordinates, earth rotation parameters and apparent geocenter. Geodesy 83:385–392
Altamimi Z, Collilieux X, Métivier L (2011) ITRF2008: an improved solution of the international terrestrial reference frame. J Geodesy 85(8):457–473
Qiu W (2003) Selecting weight iteration method with reliable initial values Geo Spat Inf Sci (8): 452–454
Zhou J, Huang Y, Yang Y, Ou J (1997) Robust least square method. Publishing House of Huazhong University of Science and Technology, Wu Han
Ou J (1996) An design of three-step robust solutions. Acta Geodaetica et Cartographica Sinica 8:173–179
Chen K, Xu T (2014) A new strategy on precise clock combination of IGS analysis centers. China Satellite Navigation Conference (CSNC) 2014 Proceedings, (2):255–268
Jan K, Pierre H (2001) Precise point positioning using IGS orbit and clock products. GPS Solution 5(2):12–28
Acknowledgments
This work was supported by Natural Science Foundation of China (41174008) and the Open Foundation of State Key Laboratory of Geodesy and Earth’s Dynamics (SKLGED2013-4-2-EZ) and State Key Laboratory of Astronautic and Dynamics (2014ADL-DW0101).
Author information
Authors and Affiliations
Corresponding author
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2015 Springer-Verlag Berlin Heidelberg
About this paper
Cite this paper
Chen, K., Xu, T., Chen, G., Li, J., Yu, S. (2015). The Orbit and Clock Combination of iGMAS Analysis Centers and the Analysis of Their Precision. In: Sun, J., Liu, J., Fan, S., Lu, X. (eds) China Satellite Navigation Conference (CSNC) 2015 Proceedings: Volume II. Lecture Notes in Electrical Engineering, vol 341. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-662-46635-3_36
Download citation
DOI: https://doi.org/10.1007/978-3-662-46635-3_36
Published:
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-662-46634-6
Online ISBN: 978-3-662-46635-3
eBook Packages: EngineeringEngineering (R0)