Influence of Reference Station Distribution on the Korean SBAS Performance

Youngsun Yun

Abstract: Since SBAS reference stations collect GPS measurements to observe ephemeris errors and ionospheric delays at different points of view, their distribution is the one of the most important factors that affect the system performance. Once the stations are installed at the sites, it is not easy to move them to other sites. So, the effects of reference station distribution should be analyzed carefully from the very beginning of the program in order to develop the system successfully in compliance with given performance requirements. At the moment the Korean SBAS reference stations are planned to be installed only inside South Korean territory, which limits the number and area of the stations. It differentiates Korean SBAS from others that have much larger sites. In this paper, the author identifies the potential risks on UDRE, ?UDRE and GIVE due to the reference station geometry limitations. The paper will also discuss the GEO ranging performance and the effects of reference station data loss due to communication network problem, ionosphere scintillation, radio frequency interference considering the reference station distribution. The paper concludes by providing design and development plan of Korean SBAS to minimize the risks described above.
Published in: Proceedings of the ION 2015 Pacific PNT Meeting
April 20 - 23, 2015
Marriott Waikiki Beach Resort & Spa
Honolulu, Hawaii
Pages: 964 - 969
Cite this article: Yun, Youngsun, "Influence of Reference Station Distribution on the Korean SBAS Performance," Proceedings of the ION 2015 Pacific PNT Meeting, Honolulu, Hawaii, April 2015, pp. 964-969.
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