First morphological results of the GPS L-band amplitude scintillation from Tarawa Equatorial Station

Kumar, Sarvesh and Kumar, Sushil (2022) First morphological results of the GPS L-band amplitude scintillation from Tarawa Equatorial Station. [Conference Proceedings]

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Abstract

We present the first morphological results of the Global
Positioning Systems (GPS) L1 and L2 band amplitude
scintillation (S4 index) from Tarawa Equatorial Station
(geog: 1.33°N, 173.01°E, geomag: 2.68°S, 114.26°W).
The analysis period of September 2017 to November 2018
falls in the low solar activity period of solar cycle 24 (avg sunspot# = 11.6). The scintillation data were analyzed to study the diurnal variation, seasonal variation,
geomagnetic dependence, and solar flare dependence of the
S4 index. No daytime scintillations were observed during
the entire study period on either of the bands. Nighttime
scintillations had maximum occurrence during equinox
months followed by summer and then winter. L2 band
recordings showed an increased level of scintillation
compared to the L1 band. Geomagnetic disturbances effect
showed increased scintillation activities during the
magnetically disturbed days compared to quiet days.
Scintillations during geomagnetic storms were dominantly
confined in the pre-midnight hours and finally,
scintillations were found to be completely absent during
solar flare events.

Item Type:	Conference Proceedings
Subjects:	Q Science > QC Physics Q Science > QC Physics > QC811-849 Geomagnetism
Divisions:	School of Information Technology, Engineering, Mathematics and Physics (STEMP)
Depositing User:	Ms Shalni Sanjana
Date Deposited:	27 Nov 2024 00:51
Last Modified:	27 Nov 2024 00:51
URI:	https://repository.usp.ac.fj/id/eprint/14649

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