Estimation of frequency and duration of ionospheric disturbances over Turkey with IONOLAB-FFT algorithm
Yazarlar (1)
Doç. Dr. Seçil KARATAY Kastamonu Üniversitesi, Türkiye
Makale Türü Açık Erişim Özgün Makale (SSCI, AHCI, SCI, SCI-Exp dergilerinde yayınlanan tam makale)
Dergi Adı Journal of Geodesy (Q1)
Dergi ISSN 0949-7714 Wos Dergi Scopus Dergi
Dergi Tarandığı Indeksler SCI-Expanded
Makale Dili İngilizce Basım Tarihi 09-2020
Kabul Tarihi 06-08-2020 Yayınlanma Tarihi 31-08-2020
Cilt / Sayı / Sayfa 94 / 9 / 1–24 DOI 10.1007/s00190-020-01416-1
Makale Linki http://link.springer.com/10.1007/s00190-020-01416-1
Özet
One of the more common methods of observation of variability of the Earth’s ionosphere is based on total electron content (TEC) estimated from ground-based dual-frequency Global Positioning System (GPS) receivers. Variations in solar, geomagnetic and seismic activity cause depletions or enhancements in the ionospheric electron concentrations that can be detected as disturbances. Some of these disturbances have wave-like characteristics, where frequency of oscillation can be used to identify and classify the disturbance. In this study, the frequency of such periodic disturbances is estimated using a fast Fourier transform (FFT)-based method, namely IONOLAB-FFT, in the spectral domain. IONOLAB-FFT, which was initially developed to be used on slant TEC (STEC), is modified to be applied to TEC in the local zenith direction of the receiver. The algorithm is tested using literature data on disturbances …
Anahtar Kelimeler
Disturbances | FFT | GPS | Ionosphere | Total electron content