Derivation of GPS TEC and receiver bias for Langkawi station in Malaysia

Research output: Contribution to journalConference article

Abstract

This paper presents the polynomial-type TEC model to derive total electron content (TEC) and receiver bias for Langkawi (LGKW) station in Malaysia at geographic latitude of 6.32° and longitude of 99.85°. The model uses a polynomial function of coordinates of the ionospheric piercing point to describe the TEC distribution in space. In the model, six polynomial coefficients and a receiver bias are unknown which can be solved by the least squares method. A reasonable agreement is achieved for the derivation of TEC and receiver bias for IENG station in Italy, as compared with that derived by the IGS analysis center, CODE. We process one year of LGKW data in 2010 and show the monthly receiver bias and the seasonal TEC variation. The monthly receiver bias varies between -48 and -24 TECu (1016 electrons/m2), with the mean value at -37 TECu. Large variations happen in the monthly receiver biases due to the low data coverage of high satellite elevation angle (60° < α ≤ 90°). Post-processing TEC approach is implemented which can resolve the wavy pattern of the monthly TEC baseline resulted from the large variation of the receiver bias. The seasonal TEC variation at LGKW exhibits a semi-annual variation, where the peak occurs during equinoctial months, and the trough during summer and winter months.

Original languageEnglish
Article number012018
JournalJournal of Physics: Conference Series
Volume852
Issue number1
DOIs
Publication statusPublished - 6 Jun 2017
Event2017 International Conference on Space Science and Communication: Space Science for Sustainability, IconSpace 2017 - Kuala Lumpur, Malaysia
Duration: 3 May 20175 May 2017

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Malaysia
derivation
receivers
stations
electrons
polynomials
piercing
elevation angle
least squares method
annual variations
longitude
troughs
Italy
winter
ionospherics
summer

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Derivation of GPS TEC and receiver bias for Langkawi station in Malaysia. / Wai Leong, Teh; Chen, W. S.; Abdullah, Mardina.

In: Journal of Physics: Conference Series, Vol. 852, No. 1, 012018, 06.06.2017.

Research output: Contribution to journalConference article

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