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http://dx.doi.org/10.5139/JKSAS.2014.42.5.368

Analysis of Sigma Inflation Factor with Respect to Elevation Angle for GBAS Availability Improvement  

Park, Jong-Geun (Konkuk University Aerospace Information System Engineering)
Ahn, Jongsun (Konkuk University Aerospace Information System Engineering)
Jun, Hyang-Sig (Korea Aerospace Research Institute CNS/ATM and Satellite Navigation Research Center)
Yeom, Chan-Hong (Korea Aerospace Research Institute CNS/ATM and Satellite Navigation Research Center)
Sung, Sangkyung (Konkuk University Aerospace Information System Engineering)
Lee, Young Jae (Konkuk University Aerospace Information System Engineering)
Publication Information
Journal of the Korean Society for Aeronautical & Space Sciences / v.42, no.5, 2014 , pp. 368-375 More about this Journal
Abstract
The Ground Based Augmentation System (GBAS) is influenced by environmental factors, making analysis in the installation region important. This study has proposed the sigma inflation of the B-value considering the satellite elevation angle and analyzed the Vertical Protection Level (VPL) of the H1 hypothesis. After collecting data that meet the environmental conditions of the installation region, sigma expansion coefficients by the unit of satellite elevation angle ($5^{\circ}$) have been estimated. The obtained results were functionalized through curve-fitting, and sigma inflation customized for the environmental conditions of the test region was proposed. Then, the characteristics were classified and analyzed depending on humidity and solar activities. According to the sigma inflation with respect to elevation angle analysis, changes in the size of sigma inflation factors by the difference of humidity were minor. However, the VPL under the satellite elevation angle-based sigma inflation met integrity. Also, considering the sigma inflation factor with respect to elevation angle, compared to existing methods, high-integrity and improved availability is confirmed by removing unnecessary margins in high elevation angle satellite.
Keywords
GBAS(Ground Based Augmentation System); Sigma Inflation Factor; Elevation Angle;
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Times Cited By KSCI : 1  (Citation Analysis)
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