GNSS signal propagation through ionosphere
Global Navigation Satellite System (GNSS) applications such as satellite navigation, tracking, mapping, and timing have been widely used in recent years. Because of our increasing reliance on them, it is critical that we gain a better understanding of GNSS signal transmission and any jeopardizi...
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| Format: | Final Year Project |
| Language: | English |
| Published: |
Nanyang Technological University
2021
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| Online Access: | https://hdl.handle.net/10356/149536 |
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| Institution: | Nanyang Technological University |
| Language: | English |
| Summary: | Global Navigation Satellite System (GNSS) applications such as satellite navigation,
tracking, mapping, and timing have been widely used in recent years. Because of our
increasing reliance on them, it is critical that we gain a better understanding of GNSS
signal transmission and any jeopardizing factors that cause signal degradation. In
equatorial/low-attitude areas, ionospheric scintillation is a significant cause of
VHF/UHF signal degradation. Singapore scintillation data was obtained from the
Septentrio PolaRxS, a GPS receiver located at 1.34◦N, 103.68◦E in the West of
Singapore. First, the cause of ionospheric scintillation was discussed, as well as the
theoretical explanations for the well-known diurnal, seasonal, and solar activity
patterns of amplitude scintillation in equatorial/low-latitude regions. Then, from
January 2019 to December 2019, Total Electron Content (TEC) scintillation data was
compiled and analysed, to confirm the well-known patterns. |
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