Tight Integrated GNSS/DME Navigation for Aviation RNP Operation

Shuguang Sun, Lugang Yuan, Ruoxin Gong, Haolin Wang, Yanzhi Xun

Abstract:	With the implementation of Performance Based Navigation (PBN) under the Next Generation Air Transportation System (NextGen), more and more Required Navigation Performance (RNP) procedures and routes supported by airborne GNSS receivers are used, including departure, arrival, and approach procedures, where high navigation performance is required. On the other hand, mountainous terrain and surrounding buildings near airport are easy to block GNSS satellites which lead to the airborne navigation system performance degradation or even can’t support RNP operation. Aiming at this possible RNP operation environment, a scheme of using distance measurement equipment (DME) signal to assist GNSS receiver navigation performance improving is proposed, and the Receiver Autonomous Integrated Monitoring (RAIM) method of tight integrated GNSS/DME navigation system is given. The GNSS/DME positioning algorithm and protection limit calculation are derived to ensure the navigation accuracy and integrity. The integrated algorithm is simulated and verified. The simulation results show that using integrated GNSS/DME solution can effectively improve the navigation performance and improve the availability of RNP operation in critical environment.
Published in:	Proceedings of the 35th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS+ 2022) September 19 - 23, 2022 Hyatt Regency Denver Denver, Colorado
Pages:	304 - 311
Cite this article:	Sun, Shuguang, Yuan, Lugang, Gong, Ruoxin, Wang, Haolin, Xun, Yanzhi, "Tight Integrated GNSS/DME Navigation for Aviation RNP Operation," Proceedings of the 35th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS+ 2022), Denver, Colorado, September 2022, pp. 304-311. https://doi.org/10.33012/2022.18362
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