STUDY ON FAST CONVERGENCE METHOD IN PRECISE POINT POSITIONING
Hao Ming 1,2) ; Wang Qingliang 2) ; and Cui Duxin 2)
1)Institute of Geology, CEA,Beijing 1000292)Second Crust Monitoring and Application Center, CEA,Xi’an 710054
Abstract The current mathematical model and parameter estimation method in Precise Point Positioning (PPP) are introduced, and then the way to improve convergence in PPP is introduced. The improvement includes: 1) the adaptive filtering by selection of the parameter weights is applied in the parameter estimation; 2) the selecting weight fitting method is employed to determine the initial parameters and corresponding variancecovariance. According to the new method, the paper develops the PPP using IGS rapid precise ephemeredes products (latency of 17 hours).The calculation examples demonstrate that the position precision can achieve decimeter to centimeter in the short time, and satisfy the requirement of efficiency.
Key words ：
Precise Point Positioning(PPP)
requirement of efficiency
selecting weight fitting
adaptive filtering by selection of the parameter weights
precise ephemerides
Received: 01 January 1900
Corresponding Authors:
Hao Ming
Cite this article:
Hao Ming,Wang Qingliang ,and Cui Duxin . STUDY ON FAST CONVERGENCE METHOD IN PRECISE POINT POSITIONING[J]. , 2009, 29(2): 88-91.
Hao Ming,Wang Qingliang ,and Cui Duxin . STUDY ON FAST CONVERGENCE METHOD IN PRECISE POINT POSITIONING[J]. jgg, 2009, 29(2): 88-91.
URL:
http://www.jgg09.com/EN/ OR http://www.jgg09.com/EN/Y2009/V29/I2/88
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