Title: Ephemeris Monitor for GBAS Using Multiple Baseline Antennas with Experimental Validation
Author(s): Samer Khanafseh, Jaymin Patel, and Boris Pervan
Published in: Proceedings of the 30th International Technical Meeting of The Satellite Division of the Institute of Navigation (ION GNSS+ 2017)
September 25 - 29, 2017
Oregon Convention Center
Portland, Oregon
Pages: 4197 - 4209
Cite this article: Khanafseh, Samer, Patel, Jaymin, Pervan, Boris, "Ephemeris Monitor for GBAS Using Multiple Baseline Antennas with Experimental Validation," Proceedings of the 30th International Technical Meeting of The Satellite Division of the Institute of Navigation (ION GNSS+ 2017), Portland, Oregon, September 2017, pp. 4197-4209.
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Abstract: In this paper, a new ground-based monitor is developed that instantaneously detects all types of orbit ephemeris faults in Ground Based Augmentation Systems (GBAS). Ephemeris faults result in spatial gradients that can be detected using differential GPS measurements across spatially separated ground antennas. The monitor utilizes both carrier phase and pseudorange code measurements from multiple baselines for fault detection. We show that the developed monitor performance exceeds the existing fault detection algorithms and is capable of supporting Category III precision approach and landing.