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http://dx.doi.org/10.12673/jant.2019.23.3.237

Selection Methods of Multi-Constellation SBAS in WAAS-EGNOS Overlap Region  

Kim, Mingyu (School of Aerospace and Mechanical Engineering, Korea Aerospace University)
Kim, Jeongrae (School of Aerospace and Mechanical Engineering, Korea Aerospace University)
Publication Information
Journal of Advanced Navigation Technology / v.23, no.3, 2019 , pp. 237-244 More about this Journal
Abstract
Since SBAS provides users with GNSS orbit, clock, and ionospheric corrections and integrity, the more precise positioning is possible. As the SBAS service area is expanded due to the development of the SBAS and the installation of the additional ground stations, there is a region where two or more SBAS messages can be received. However, the research on multi-constellation SBAS selection method has not carried out. In this study, we compared the result of positioning accuracy after applying the SBAS correction selected by using WAAS priority, EGNOS priority, or error covariance comparison method to LEO satellites in the regions where WAAS and EGNOS signals are transmitted simultaneously. When using WAAS priority method, 3D orbit error is smallest at 2.57 m. The covariance comparison method is outperform at the center of the overlap region far from each WAAS and EGNOS stations. In the eastern region near the EGNOS stations, the 3D orbit errors using EGNOS priority method is 8% smaller than the errors using the WAAS priority method.
Keywords
Low earth orbit satellites; Satellite-based augmentation system; SBAS correction; SBAS selection;
Citations & Related Records
Times Cited By KSCI : 4  (Citation Analysis)
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