Open AccessWavelet‐based analogous phase scintillation index for high latitudes
Author(s) -
Ahmed A.,
Tiwari R.,
Strangeways H. J.,
Dlay S.,
Johnsen M. G.
Publication year - 2015
Publication title -
space weather
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.254
H-Index - 56
ISSN - 1542-7390
DOI - 10.1002/2015sw001183
Subject(s) - scintillation , interplanetary scintillation , tec , global positioning system , total electron content , phase (matter) , remote sensing , ionosphere , environmental science , optics , geodesy , computer science , physics , geology , telecommunications , detector , geophysics , coronal mass ejection , quantum mechanics , magnetic field , solar wind
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°N, 10.4°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.