Determination of traveling ionospheric disturbances of geomagnetic storm by using dual frequency GPS data

Space weather is a fairly new field in science today and has very interesting effects on the humans and technology in general. Geomagnetic storms are part of space weather and the solar-terrestrial connection. These storms have greatly affected the earth´ s atmosphere and ionosphere. This project focus on detection of TIDs during geomagnetic storms. TID is part of disturbance that occurs at ionosphere and it is caused by sun activities. The important parameter in this project is TEC which is the value of TEC change rate; DeltaTEC is taken within the period of 15 minutes in order to detect TID. TEC is extracted using GPS dual frequency data which in RINEX format that supplied by JUPEM (Department Of Survey and Mapping Malaysia) and taken from receiver station located at Universiti Teknologi Malaysia, Johor (Latitude (E) 103.6⁰ Longitude (N) 1.6⁰). The value of DeltaTEC is compared base on largest daily Kp index for different seven days.