Multi-Constellation Augmentation Based on EGNOS and Galileo Simulation

Ruizhi Chen, Pengfei Cheng, Terry Moore, Chris Hill, Antti Hyttinen, Xiyin Li, Yuwei Chen, tobias Johler, and Yanhui Cai

Abstract:	Under a contract offered by the Galileo Joint Undertaking, the Finnish Geodetic Institute, Institute Engineering Surveying and Space Geodesy of the University of Nottingham, and the Chinese Academy of Surveying and Mapping and are now prototyping a multi-constellation augmentation service based on the EGNOS signal in space and Galileo simulation. The context of the project covers the prototype development of a SBAS message encoder to generate the SBAS messages for both GPS and Galileo; a simulator for simulating the Galileo-related augmentation corrections and raw measurements; an Internet broadcaster for disseminating the augmentation signals over the wireless Internet; a central processing facility for real-time estimation of the ionospheric delays, and a Pocket PC-based user terminal for demonstrating the multi-constellation augmentation service. This paper provides a brief description of the system prototyped in the project and presents the preliminary test results for the test carried out in Helsinki. The horizontal and vertical protection levels of the augmented GPS/Galileo service are evaluated and compared to that of the single constellation augmentation solutions. The test results demonstrated that the augmented GPS/Galileo solution performed better than that of the single constellation solution (either GPS or Galileo).
Published in:	Proceedings of the 2007 National Technical Meeting of The Institute of Navigation January 22 - 24, 2007 The Catamaran Resort Hotel San Diego, CA
Pages:	285 - 290
Cite this article:	Chen, Ruizhi, Cheng, Pengfei, Moore, Terry, Hill, Chris, Hyttinen, Antti, Li, Xiyin, Chen, Yuwei, Johler, tobias, Cai, Yanhui, "Multi-Constellation Augmentation Based on EGNOS and Galileo Simulation," Proceedings of the 2007 National Technical Meeting of The Institute of Navigation, San Diego, CA, January 2007, pp. 285-290.
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