| Autor: |
Artem Padokhin, E. A. Kozlovtseva, G. A. Kurbatov, N. A. Tereshin |
| Rok vydání: |
2018 |
| Předmět: |
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| Zdroj: |
2018 Progress in Electromagnetics Research Symposium (PIERS-Toyama). |
| DOI: |
10.23919/piers.2018.8597665 |
| Popis: |
Recent developments in GNSS systems include the launches of geostationary satellites used in Compass/BeiDou constellations. Those satellites have proven themselves to be a useful and convenient tool for ionospheric studies. In this work, the capability of geostationary GNSS data for studying the equatorial ionosphere is evaluated. To provide experimental data for this research, a GNSS base station located in Singapore (SIN1)is used, with long-term data being collected during October 2013-0ctober 2014. A modified technique for estimating TEC variations using geostationary GNSS data is applied. Wavelet power spectrums using complex Morlet wavelet are calculated for obtained long-term geostationary TEC series to study quasiperiodic variations at the scales of approximately one week to one month. To study inter-daily changes in the occurrence rate of small-scale ionospheric irregularities, ROTI index is calculated from obtained TEC series. Results are discussed in the context of various ionospheric phenomena that cause those seasonal variations. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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