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1997•Proceedings of the 10th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS 1997)Requires access

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

Yang Gao, Z. Li, J.F. McLellan

Open publisher page 90 citations

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.

About this research paper

What this paper is about

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.

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Available 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.

Key concepts: Global Positioning System, Differential GPS, Computer science, Differential (mechanical device), Precise Point Positioning, Bridge (graph theory), Real-time computing, Remote sensing

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