A Study for Performance Enhancements of the Asian-Australian GPS Augmentation System (AAAS)

Yanming Feng, Kurt Kubik, Jizhang Sang, Jingnan Liu

Abstract:	Three separate Wide Area Augmentation Programs have been proposed independently by Australia, P. R. China and Japan within the same geographical region. This paper discusses the opportunity to combine or integrate these three systems into one unified WAAS system for the whole Asian-Australian area. This resulting system, which we may call “Asian-Australian Augmentation System” (AAAS) would provide full integrity, accuracy and an additional ranging capability for all phases of flight such as oceanic, domestic, non-precision- and precision approach for most of the countries in East-Asia and Australia. The paper first addresses the configuration and operational strategy for the AAAS system. The performance enhancements provided by the AAAS are then examined, in particular the geometric precision of GEQs orbit determination. Then, Navigation Availability and Receiver Autonomous Integrity Monitoring @AIM) Availability are studied over the areas of Australia, China, Japan and South-East Asia for the non-precision approach phase of flight. Different combinations and configurations of GPS and GEG’s are evaluated. The results demonstrate that the accuracy of GEG orbit determination from the AAAS ground network is vastly superior to country-wide operation. AAAS achieves RAIM availability of 100 percent, using the integrated constellation of the 6 GE0 satellites from the individual networks, and their ranging functions.
Published in:	Proceedings of the 8th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS 1995) September 12 - 15, 1995 Palm Springs, CA
Pages:	705 - 711
Cite this article:	Feng, Yanming, Kubik, Kurt, Sang, Jizhang, Liu, Jingnan, "A Study for Performance Enhancements of the Asian-Australian GPS Augmentation System (AAAS)," Proceedings of the 8th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS 1995), Palm Springs, CA, September 1995, pp. 705-711.
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