Generalized Divergence-Free Carrier Smoothing with Applications to Dual Frequency Differential GPS

G.A. McGraw

Abstract:	This paper develops a generalized framework for smoothing Global Positioning System (GPS) pseudorange measurements with carrier phase measurements. This framework, called 'Generalized Divergence-Free Smoothing', not only encompasses Dual Frequency Smoothing techniques known previously, but provides a continuum of possible smoothing configurations. When incorporated into DGPS architectures, the GDFS technique can be exploited to achieve specific objectives, such as minimum pseudorange errors, ionosphere-free measurements, or geometry-free integer ambiguity resolution. A highly flexible DGPS architecture based on GDFS processing is presented. The GDFS framework also provides a methodology for evaluating the performance of signal combinations for modernized Global Navigation Satellite Systems.
Published in:	Proceedings of the 2006 National Technical Meeting of The Institute of Navigation January 18 - 20, 2006 Hyatt Regency Hotel Monterey, CA
Pages:	293 - 300
Cite this article:	Updated citation: Published in NAVIGATION: Journal of the Institute of Navigation
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