Cycle-Slip Correction for Single-Frequency PPP

Simon Banville and Richard B. Langley

Abstract:	With external corrections from a network of stations, cm-level positioning can now be achieved with single-frequency receivers. Since processing of carrier-phase data might be affected by a convergence period due to the estimation of ambiguity parameters, quick recovery from tracking interruptions is critical in maintaining a continuous precise navigation solution. Unfortunately, most cycle-slip correction approaches developed for single-frequency receivers do not allow for rapid and robust bridging of discontinuities. This paper demonstrates that even a geometry-based approach based on time-differenced observations lacks the geometric strength required for reliable instantaneous cycle-slip correction. Two solutions are proposed to solve this issue: 1) the use of the decoupled-clock model and 2) the integration of the cycle-slip correction process in a navigation filter. While there are still limitations associated with this technique, it does not suffer from the single-epoch constraint associated with the time-differenced model.
Published in:	Proceedings of the 25th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS 2012) September 17 - 21, 2012 Nashville Convention Center, Nashville, Tennessee Nashville, TN
Pages:	3753 - 3761
Cite this article:	Banville, Simon, Langley, Richard B., "Cycle-Slip Correction for Single-Frequency PPP," Proceedings of the 25th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS 2012), Nashville, TN, September 2012, pp. 3753-3761.
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