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Wavelet-based analogous phase scintillation index for high latitudes

Lookup NU author(s): Arslan AHMED, Dr Rajesh Tiwari, Dr Hal Strangeways, Professor Satnam Dlay



This work is licensed under a Creative Commons Attribution 4.0 International License (CC BY 4.0).


The Global Positioning System (GPS) performance at high latitudes can be severely affected by the ionospheric scintillation due to the presence of small-scale time-varying electron density irregularities. In this paper, an improved analogous phase scintillation index derived using the wavelet-transform-based filtering technique is presented to represent the effects of scintillation regionally at European high latitudes. The improved analogous phase index is then compared with the original analogous phase index and the phase scintillation index for performance comparison using 1 year of data from Trondheim, Norway (63.41 degrees N, 10.4 degrees E). This index provides samples at a 1 min rate using raw total electron content (TEC) data at 1 Hz for the prediction of phase scintillation compared to the scintillation monitoring receivers (such as NovAtel Global Navigation Satellite Systems Ionospheric Scintillation and TEC Monitor receivers) which operate at 50 Hz rate and are thus rather computationally intensive. The estimation of phase scintillation effects using high sample rate data makes the improved analogous phase index a suitable candidate which can be used in regional geodetic dual-frequency-based GPS receivers to efficiently update the tracking loop parameters based on tracking jitter variance.

Publication metadata

Author(s): Ahmed A, Tiwari R, Strangeways HJ, Dlay S, Johnsen MG

Publication type: Article

Publication status: Published

Journal: Space Weather

Year: 2015

Volume: 13

Issue: 8

Pages: 503-520

Print publication date: 01/08/2015

Online publication date: 12/08/2015

Acceptance date: 07/07/2015

Date deposited: 12/04/2016

ISSN (print): 1542-7390

Publisher: Wiley-Blackwell Publishing, Inc.


DOI: 10.1002/2015SW001183


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Funder referenceFunder name
IBA, Sukkur, Pakistan
EP/H004637/1EPSRC (Engineering and Physical Science Research Council)