A New Approach to GPS Carrier Phase Ambiguity Resolution Using Single Epoch Dual Frequency Data

H. Sun

Abstract:	For years, the fast ambiguity resolution method, especially that using a single epoch data, has been a challenging issue in the precise GPS positioning. In this paper, a new approach (Dual Frequency Correlation Method, DUFCOM) is proposed for performing GPS carrier-phase ambiguity resolution using single-epoch C/A code and dual frequency carrier phase data. A total new concept of error strip for double-differenced integer ambiguity in observation field is introduced, based on the inner correlation of dual frequency carrier phase. This error strip establishes the foundation for further and rapid search in the intersection of adjusted observation field and ambiguity field. The intersection search technique greatly enhances the efficiency by reducing the number of sets of integer ambiguities that needs to be searched. This reliable approach is proved to have high success rate though a large number of experiments. It makes real possible for the efficient real-time positioning method. Using this method, the detection and reparation for cycle slips is not necessary anymore, and so to make the GPS kinematic positioning more simple and efficient, especially in the poor environment such as urban canyon.
Published in:	Proceedings of the 16th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS/GNSS 2003) September 9 - 12, 2003 Oregon Convention Center Portland, OR
Pages:	783 - 789
Cite this article:	Sun, H., "A New Approach to GPS Carrier Phase Ambiguity Resolution Using Single Epoch Dual Frequency Data," Proceedings of the 16th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS/GNSS 2003), Portland, OR, September 2003, pp. 783-789.
Full Paper:	ION Members/Non-Members: 1 Download Credit Sign In