Title :
The Effects of Sumatra-Andaman Earthquake on Total Ionospheric Electron Content (TEC) and Ionospheric Scintillation of GPS Signal in Thailand
Author :
Theerapatpaiboon, P. ; Leelaruji, N. ; Hemmakorn, N. ; Supnithi, P.
Author_Institution :
Fac. of Eng., King Mongkut´´s Inst. of Technol. Ladkrabang, Bangkok
Abstract :
This paper presents the effects of Sumatra-Andaman earthquake (26 December 2004) on the total ionospheric electron content (TEC) by using the TEC meter (JAVAD) installed at KMITL. From the results, we found that the total ionospheric electron content enhancement at the time of this earthquake is higher than other days about 7 TEC units. Furthermore, the study includes the effect of this phenomenon on GPS signal (1575.45 MHz) by employing S4 index and sigmaphi(60sec) to identify the severity of amplitude scintillation and phase scintillation, respectively. From the observation, we can conclude that TEC variation is the cause of ionospheric scintillation leading to the position error on GPS about 8 meters
Keywords :
Global Positioning System; earthquakes; ionospheric electromagnetic wave propagation; radiowave propagation; GPS signal; Global Positioning System; KMITL; Sumatra-Andaman earthquake; TEC; Thailand; amplitude scintillation; ionospheric scintillation; phase scintillation; total ionospheric electron content; Atmosphere; Earthquake engineering; Electrons; Global Positioning System; Information technology; Ionosphere; Java; Satellite broadcasting; Satellite communication; Signal processing; Earthquake; GPS signal; Ionospheric scintillation; Total ionospheric electron content (TEC);
Conference_Titel :
Information, Communications and Signal Processing, 2005 Fifth International Conference on
Conference_Location :
Bangkok
Print_ISBN :
0-7803-9283-3
DOI :
10.1109/ICICS.2005.1689241
