Long-Range Single-Baseline RTK for Complementing Network-Based RTK

Don Kim and Richard B. Langley

Abstract:	One of the major challenges in resolving ambiguities for longer baselines is the presence of unmodelled ionospheric and tropospheric delays. In this paper, we describe a new approach that does not rely on the convergence of atmospheric parameters. The new approach instantaneously nullifies the effect of the differential ionospheric delay in an ambiguity search process and simultaneously estimates the differential tropospheric delay and baseline components at every epoch. The performance of the new approach was demonstrated using the data recorded at a 1 Hz data rate at a pair of base stations on either side of the Bay of Fundy in eastern Canada and on a ferry boat, at the terminals of an approximately 74 km ferry route, on 21 May 2004. For both static and kinematic tests over the longer 74 km baseline, mean differences of a few millimetres were observed in each Cartesian component, and the comparison 1ó noise level was at the few centimetre level.
Published in:	Proceedings of the 20th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS 2007) September 25 - 28, 2007 Fort Worth Convention Center Fort Worth, TX
Pages:	639 - 650
Cite this article:	Kim, Don, Langley, Richard B., "Long-Range Single-Baseline RTK for Complementing Network-Based RTK," Proceedings of the 20th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS 2007), Fort Worth, TX, September 2007, pp. 639-650.
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