Carrier Phase Based Regional Area Differential GPS for Decimeter-Level Positioning and Navigation

Y. Gao, Z. Li and J.F. McLellan

Abstract:	The concept of Regional Area Differential GPS (RADGPS) is described in this paper. RADGPS is able to serve as a bridge to fill the gap between the existing WADGPS and LADGPS systems. While WADGPS aims to provide meter-level positioning over large geographical area and LADGPS focuses on cm-level accurate positioning with short reference-mobile separations, RADGPS is designed to provide decimetre-level positioning accuracy for longer reference-mobile separations in the range of hundreds of kilometers. Different aspects of RADGPS are described in this paper including system configuration, accuracy and integrity. A special focus is given to fast and reliable integer ambiguity determination and precise ionospheric correction modelling. Numerical results using data from a high precision GPS tracking array are presented to demonstrate the achievable accuracy using RADGPS.
Published in:	Proceedings of the 10th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS 1997) September 16 - 19, 1997 Kansas City, MO
Pages:	1305 - 1313
Cite this article:	Gao, Y., Li, Z., McLellan, J.F., "Carrier Phase Based Regional Area Differential GPS for Decimeter-Level Positioning and Navigation," Proceedings of the 10th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS 1997), Kansas City, MO, September 1997, pp. 1305-1313.
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