Performances of GPS Signal Observables Detrending Methods for Ionosphere Scintillation Studies

Fei Niu, Yu Morton, Steve Taylor, Wouter Pelgrum, A.J. Van Dierendonck

Abstract:	Ionosphere scintillation impacts GNSS receiver performance. The scintillation effects are measured by two scintillation indices, the amplitude scintillation index S4 and the phase scintillation index ??. These indices are computed from detrended signal power and carrier phase obtained from the receiver tracking loop outputs, respectively. Recent studies show that the values of these indices depend on the detrending method used to remove the non-scintillation effects. This paper presents our investigation of the error sources in the scintillation detrending methods. For amplitude scintillation, the main error source is the detrending filter group delay. For phase scintillation, inappropriate detrending filter cutoff frequency selection is the dominant error contributing factor. The paper presents the error assessment and correction techniques for both detrending methods.
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:	3435 - 3443
Cite this article:	Niu, Fei, Morton, Yu, Taylor, Steve, Pelgrum, Wouter, Van Dierendonck, A.J., "Performances of GPS Signal Observables Detrending Methods for Ionosphere Scintillation Studies," Proceedings of the 25th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS 2012), Nashville, TN, September 2012, pp. 3435-3443.
Full Paper:	ION Members/Non-Members: 1 Download Credit Sign In