Author/Authors :
Abdullah, Mardina Universiti Kebangsaan Malaysia - Institut Sains Angkasa, Malaysia , Mat, Dayang Azra Awang Universiti Malaysia Sarawak - Fakulti Kejuruteraan, Malaysia , Mohd Zain, Ahmad Faizal Universiti Tun Hussein Onn Malaysia - Wireless and Radio Science Centre (WARAS), Malaysia , Abdullah, Sabirin Universiti Tun Hussein Onn Malaysia (UTHM) - Wireless and Radio Science Centre (WARAS), Malaysia , Nik Zulkifli, Asnawi Universiti Kebangsaan Malaysia - Fakulti Kejuruteraan dan Alam Bina - Jabatan Kejuruteraan Elektrik, Elektronik dan Sistem, Malaysia , Nik Zulkifli, Siti Sarah Universiti Kebangsaan Malaysia - Fakulti Kejuruteraan dan Alam Bina - Jabatan Kejuruteraan Elektrik, Elektronik dan Sistem, Malaysia
Abstract :
Travelling ionospheric disturbance (TID) is a phenomenon caused by solar activity and TID strength varies by locations, especially in equatorial regions. This phenomenon affects the local total electron content (TEC), especially during the daytime. Because of this, research regarding augmenting TEC values during TID is done by comparing TEC values obtained from the IRI2001 and NeQuick models with IONEX data. By using Global Positioning System (GPS) data obtained from the Parit Raja station in the southern part of Malaysia (1° 52’ N, 103° 06’ E) as reference, research was conducted during geomagnetic quiet day as well as on the disturbed day. The occurrence of TID can clearly be seen when using the real TEC data from IONEX and WARAS. Result obtained from Parit Raja station shows a much more significant effect of TID occurrence on TEC than what was shown by IONEX data. However, the TEC values obtained from the IRI2001 and NeQuick models were influenced by the number of sunspots and were only applicable in geomagnetic quiet days. In order to obtain more accurate TEC values, it is necessary to ensure that TID condition is included in the IRI2001 and NeQuick models.
Keywords :
TEC , TID , ionosphere , IRI2001 , NeQuick , IONEX
