High‐latitude intermittent ionospheric scintillations: Exploring the Castaing distribution. Issue 8 (13th August 2015)

• Record Type: Journal Article
• Authors: Mezaoui, H.; Hamza, A. M.; Jayachandran, P. T.
• Is Part Of: Journal of geophysical research. Volume 120:Issue 8(2015:Aug.)
• Page Start: 6831
• Page End: 6836
• Publication Date: 2015-08-13
• Subjects: Ionospheric irregularities -- polar cap ionosphere -- Ionospheric disturbances; Magnetospheric physics -- Periodicals; Space environment -- Periodicals; Cosmic physics -- Periodicals; Planets -- Atmospheres -- Periodicals; Heliosphere (Astrophysics) -- Periodicals; Geophysics -- Periodicals; 523.01
• DOI: 10.1002/2015JA021304
• Languages: English
• ISSNs: 2169-9380

Abstract

Abstract: We present a multiscale analysis of the received amplitude fluctuations of the L1 GPS signal. The analysis consists of constructing a differential amplitude signal by taking the difference between the signal at time t and the signal at time t + τ, where τ represents a time lag. The probability density functions of the measured differential amplitude fluctuations are computed and fitted with Castaing distributions. The fourth normalized moment of the distributions is used to investigate the intermittent nature of the signal. The results reveal direct evidence that the intermittent aspect of the investigated scintillation events is more pronounced at small differential time lags than at long ones. Key Point: Multifractal analysis of the GPS L1 signal