An Improved Grey Model and Its Application Research on the Prediction of Real-time GPS Satellite Clock Errors

Details An Improved Grey Model and Its Application Research on the Prediction of Real-time GPS Satellite Clock Errors An Improved Grey Model and Its Application Research on the Prediction of Real-time GPS Satellite Clock Errors

Jan 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009cha%26a..33...72z&link_type=abstract

Chinese Astronomy and Astrophysics, Volume 33, Issue 1, p. 72-89.

Astronomy and Astrophysics

Astrophysics

2

Scientific paper

In the work on the real-time GPS precise point positioning, the realtime and reliable prediction of the satellite clock error is one of the keys to the realization of the GPS real-time high accuracy point positioning. The satelliteborne GPS atomic clock has high frequency, is very sensitive and extremely easy to be influenced by the outside world and its own factors. Therefore, it is very difficult for one to know well its complicated and detailed law of change, with these attributes being in accordance with the characteristics of the theory of grey system. Thus, it is considered that the process of variation of the clock error is regarded as a grey system. On the basis of the exploration of the limitations of the quadratic polynomial and grey model satellite clock error predictions, the research on the real-time prediction of the GPS satellite clock error by taking advantage of the improved grey model is proposed. Finally, the materials of the GPS satellite clock error of 3 different time intervals are used to make the accuracy analysis of the clock error prediction of different sampling intervals, to study the relation between the grey model exponential coefficient and the prediction accuracy and to make the analysis of the comparison of the prediction accuracy with that of the quadratic polynomial method. The general relation between the different types of satellite clock errors and the model exponential coefficients is summarized and compared with the IGS final clock error ephemeris product to test and verify the feasibility and availability of the improved prediction model proposed in the present article so as to provide the higher-accuracy satellite clock error products for the real-time GPS dynamic precise point positioning.

Affiliated with

Also associated with

No associations

Rating

An Improved Grey Model and Its Application Research on the Prediction of Real-time GPS Satellite Clock Errors does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with An Improved Grey Model and Its Application Research on the Prediction of Real-time GPS Satellite Clock Errors, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and An Improved Grey Model and Its Application Research on the Prediction of Real-time GPS Satellite Clock Errors will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1561076