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TEC and Scintillation Study of Equatorial Ionosphere: A Month Campaign over Sipitang and Parit Raja Stations, Malaysia

Problem Statement: Ionospheric scintillations, which cause significant effects on satellite signals for communication and navigation, often takes place in equatorial region such as Malaysia. However, this disturbance are not fully understand due to few studies performed. This research reports the st...

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Main Authors: Abdullah, M, Zain, A.F.M, Ho, Yih Hwa, Sabirin Abdullah, Sabirin
Format: Article
Language:English
Published: Science Publications 2009
Subjects:
TK Electrical engineering. Electronics Nuclear engineering
Online Access:http://eprints.utem.edu.my/id/eprint/12327/1/TEC_and_Scintillation_Study_of_Equatorial_Ionosphere__A_Month_Campaign_over_Sipitang_and_Parit_Raja_Stations%2C_Malaysia.pdf
http://eprints.utem.edu.my/id/eprint/12327/
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spelling my.utem.eprints.123272015-05-28T04:24:02Z http://eprints.utem.edu.my/id/eprint/12327/ TEC and Scintillation Study of Equatorial Ionosphere: A Month Campaign over Sipitang and Parit Raja Stations, Malaysia Abdullah, M Zain, A.F.M Ho, Yih Hwa Sabirin Abdullah, Sabirin TK Electrical engineering. Electronics Nuclear engineering Problem Statement: Ionospheric scintillations, which cause significant effects on satellite signals for communication and navigation, often takes place in equatorial region such as Malaysia. However, this disturbance are not fully understand due to few studies performed. This research reports the study and monitoring activity on Total Electron Content (TEC) and ionospheric scintillation in Malaysia using GPS measurements. Approach: One dual-frequency GPS receiver was positioned at the main station in Parit Raja, West Malaysia (1.86° N, 103.8° E) and Sipitang, East Malaysia (5.10° N, 115.56° E) respectively. Dual-frequency GPS data collected during the one-month ionospheric experimental campaign was used for TEC and scintillation computation and analysis. The TEC with 15 sec interval were computed from combined L1 and L2 code-pseudorange and carrier phase measurements. Whereas, the scintillation parameter S4 index was computed as a standard deviation of the received signal power normalized to average signal power every 60 sec on L1. A corrected S4 (without noise effects) was also computed and used in the analysis. Results: It was found that the daily maxima vTEC for Parit Raja (PR) ranged from 38-100 TECU, which is generally higher than those of Sipitang, which ranged from 30-42 TECU. However, a general consistency for both stations can be seen during the 1 month campaign period. Conclusions/Recommendations: In conclusion, these results show good agreement in the existence of the equatorial anomaly observed during moderate solar flux conditions and undisturbed geomagnetic condition. This will contributes to the knowledge of equatorial ionosphere and help in space weather condition. However, to better understand and characterize the ionosphere over Malaysia, more campaigns should be encouraged. Science Publications 2009 Article PeerReviewed application/pdf en http://eprints.utem.edu.my/id/eprint/12327/1/TEC_and_Scintillation_Study_of_Equatorial_Ionosphere__A_Month_Campaign_over_Sipitang_and_Parit_Raja_Stations%2C_Malaysia.pdf Abdullah, M and Zain, A.F.M and Ho, Yih Hwa and Sabirin Abdullah, Sabirin (2009) TEC and Scintillation Study of Equatorial Ionosphere: A Month Campaign over Sipitang and Parit Raja Stations, Malaysia. American Journal of Engineering and Applied Sciences, 2 (1). pp. 44-49. ISSN 1941-7039 http://thescipub.com 10.3844/ajeassp.2009.44.49
institution Universiti Teknikal Malaysia Melaka
building UTEM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Teknikal Malaysia Melaka
content_source UTEM Institutional Repository
url_provider http://eprints.utem.edu.my/
language English
topic TK Electrical engineering. Electronics Nuclear engineering
spellingShingle TK Electrical engineering. Electronics Nuclear engineering
Abdullah, M
Zain, A.F.M
Ho, Yih Hwa
Sabirin Abdullah, Sabirin
TEC and Scintillation Study of Equatorial Ionosphere: A Month Campaign over Sipitang and Parit Raja Stations, Malaysia
description Problem Statement: Ionospheric scintillations, which cause significant effects on satellite signals for communication and navigation, often takes place in equatorial region such as Malaysia. However, this disturbance are not fully understand due to few studies performed. This research reports the study and monitoring activity on Total Electron Content (TEC) and ionospheric scintillation in Malaysia using GPS measurements. Approach: One dual-frequency GPS receiver was positioned at the main station in Parit Raja, West Malaysia (1.86° N, 103.8° E) and Sipitang, East Malaysia (5.10° N, 115.56° E) respectively. Dual-frequency GPS data collected during the one-month ionospheric experimental campaign was used for TEC and scintillation computation and analysis. The TEC with 15 sec interval were computed from combined L1 and L2 code-pseudorange and carrier phase measurements. Whereas, the scintillation parameter S4 index was computed as a standard deviation of the received signal power normalized to average signal power every 60 sec on L1. A corrected S4 (without noise effects) was also computed and used in the analysis. Results: It was found that the daily maxima vTEC for Parit Raja (PR) ranged from 38-100 TECU, which is generally higher than those of Sipitang, which ranged from 30-42 TECU. However, a general consistency for both stations can be seen during the 1 month campaign period. Conclusions/Recommendations: In conclusion, these results show good agreement in the existence of the equatorial anomaly observed during moderate solar flux conditions and undisturbed geomagnetic condition. This will contributes to the knowledge of equatorial ionosphere and help in space weather condition. However, to better understand and characterize the ionosphere over Malaysia, more campaigns should be encouraged.
format Article
author Abdullah, M
Zain, A.F.M
Ho, Yih Hwa
Sabirin Abdullah, Sabirin
author_facet Abdullah, M
Zain, A.F.M
Ho, Yih Hwa
Sabirin Abdullah, Sabirin
author_sort Abdullah, M
title TEC and Scintillation Study of Equatorial Ionosphere: A Month Campaign over Sipitang and Parit Raja Stations, Malaysia
title_short TEC and Scintillation Study of Equatorial Ionosphere: A Month Campaign over Sipitang and Parit Raja Stations, Malaysia
title_full TEC and Scintillation Study of Equatorial Ionosphere: A Month Campaign over Sipitang and Parit Raja Stations, Malaysia
title_fullStr TEC and Scintillation Study of Equatorial Ionosphere: A Month Campaign over Sipitang and Parit Raja Stations, Malaysia
title_full_unstemmed TEC and Scintillation Study of Equatorial Ionosphere: A Month Campaign over Sipitang and Parit Raja Stations, Malaysia
title_sort tec and scintillation study of equatorial ionosphere: a month campaign over sipitang and parit raja stations, malaysia
publisher Science Publications
publishDate 2009
url http://eprints.utem.edu.my/id/eprint/12327/1/TEC_and_Scintillation_Study_of_Equatorial_Ionosphere__A_Month_Campaign_over_Sipitang_and_Parit_Raja_Stations%2C_Malaysia.pdf
http://eprints.utem.edu.my/id/eprint/12327/
http://thescipub.com
_version_ 1665905494099755008
score 13.211869

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