Semi-Empirical Model for Satellite Signal Reception Using Total Electron Content and Scintillation Impairments at Low Latitude Region
| dc.contributor.author | Bong Voon Pai | |
| dc.date.accessioned | 2026-10-22T02:18:33Z | |
| dc.date.issued | 2017 | |
| dc.description | Mobile satellite system has become an important communication system to human beings since it provides reliable and continuous communication service over wide coverage. It operates in many frequency bands such as L-band frequency. However, the received signal performance is affected by the ionosphere particularly in the low latitude region. Significant research works have been done to characterize and model the satellite signal reception using the ionosphere parameters such as Total Electron Contents (TEC) and amplitude scintillation index (S4). The contribution of TEC and S4 in the empirical model for signal reception in low latitude region that is closer to the Sun is significant but not well established as compared to the other latitude regions. The aim of this research is to develop a semi-empirical model for satellite signal reception based on the TEC and S4 for the low latitude region. Global Positioning System (GPS) signal measured by Garmin handheld GPS receiver and GPS Ionospheric Scintillation and TEC Monitor (GISTM) receiver systems were used to imitate the actual mobile satellite receiver’s performance. Propagation data has been recorded under the clear sky and open space condition at Universiti Malaysia Sarawak (UNIMAS) station (1.28°N, 110.25°E). The data of portable GPS receiver system with the sampling interval of 2 seconds from 2010 and June 2014 to December 2014 are analysed. While the data of GISTM system from September 2010 to December 2011 and 2014 with the sampling interval of 60 seconds are analysed. TEC and S4 of the ionosphere were characterised and analysed. Then, the semi-empirical models for satellite signal reception were formulated by using multiple regression model by including the parameters of elevation angle, vertical TEC, and S4 and also been validated by using 11399 dataset of GISTM data measured at Universiti Kebangsaan Malaysia (UKM) station. Moreover, the Signal-to-Noise Ratio (SNR) and the prediction accuracy of the satellite signal were analysed during low and high solar activities. The Mean Squared Prediction Errors (MSPR) is equal to 1.1901 that is greater than the Mean iv Squared Error (MSE) value of 1.107. Based on these three parameters, the prediction accuracy of 93.6% was achieved during high solar period while during low solar period prediction accuracy was 93.7%. The established model can be used for signal prediction at low latitude region to meet the prediction accuracy. | |
| dc.identifier.uri | https://scholarhub.unimas.my/handle/123456789/3218 | |
| dc.language.iso | English | |
| dc.publisher | UNIVERSITI MALAYSIA SARAWAK | |
| dc.relation.ispartofseries | Faculty of Engineering | |
| dc.subject | GPS, GISTM, SNR, TEC, S4 | |
| dc.title | Semi-Empirical Model for Satellite Signal Reception Using Total Electron Content and Scintillation Impairments at Low Latitude Region | |
| dc.type | PhD |