IMPROVED STANDARDIZATION METHOD BASED ON CONCAVE-CONVEX FEATURES OF GPS ORBITS
Zhao Ziqiang ;and Liu Zhiping
NASG Key Laboratory of Land Environment and Disaster Monitoring，CUMT，Xuzhou 221116
Abstract Through analyzing and investigating the concaveconvex features of dynamic GPS orbits, the improved standardization method based on Chebyshev polynomial fitting is presented. The novel method effectively improves fitting interval division, optimal order determination and weighted fitting coefficients calculation. Finally, a case is studied from precise orbits of 32 GPS satellites using existing methods and the novel method respectively and results show that the presented method is superior to the traditional methods in efficiency and accuracy.
Key words ：
GPS
orbits standardization
concaveconvex interval
weighted fitting
optimal order
Received: 01 January 1900
Corresponding Authors:
Zhao Ziqiang
Cite this article:
Zhao Ziqiang,and Liu Zhiping. IMPROVED STANDARDIZATION METHOD BASED ON CONCAVE-CONVEX FEATURES OF GPS ORBITS[J]. , 2013, 33(1): 128-132.
Zhao Ziqiang,and Liu Zhiping. IMPROVED STANDARDIZATION METHOD BASED ON CONCAVE-CONVEX FEATURES OF GPS ORBITS[J]. jgg, 2013, 33(1): 128-132.
URL:
http://www.jgg09.com/EN/ OR http://www.jgg09.com/EN/Y2013/V33/I1/128
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