Design and Performance Evaluation of Airspace-Ground Cooperative GPS/BeiDou Dual-constellation RAIM Algorithm

Y. Liu and Y. Zhu

Abstract:	Safety is a critical issue for aviation. RAIM availability test is usually applied to insure safety service in civil aviation. At the same time, ability of airborne RAIM also requires enhancement to obtain high integrity performance. This paper proposes a flexible and easy-implementing multi-constellation RAIM algorithm based on airspace-ground cooperation. Supporting multi-constellation navigation, the proposed algorithm enables assessment of navigation measurement errors, and can provide multi-constellation RAIM availability for regional airspace to satisfy RNP for different phases of flight. To release calculation burden of aircraft, the algorithm is cascade implemented by three levels. Experiments were carried out for GPS/Beidou dual-constellation scenery. Compared with traditional RAIM, our algorithm performs superior with aspects of high failure detection probability, better integrity and availability.
Published in:	Proceedings of the 2014 International Technical Meeting of The Institute of Navigation January 27 - 29, 2014 Catamaran Resort Hotel San Diego, California
Pages:	127 - 136
Cite this article:	Liu, Y., Zhu, Y., "Design and Performance Evaluation of Airspace-Ground Cooperative GPS/BeiDou Dual-constellation RAIM Algorithm," Proceedings of the 2014 International Technical Meeting of The Institute of Navigation, San Diego, California, January 2014, pp. 127-136.
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