Research on GNSS Interoperable Parameters

T. Han, H. Wu, X. Lu, X. Wang, Y. Bai, W. Hao, G. Yang

Abstract:	Interoperability of Global Navigation Satellite System (GNSS) is a hot topic in GNSS area, and a lot of excellent related researches have come into being. But, existence of differences among GNSSs cause inconvenience to users. In order to achieve interoperability and convenient for users, interoperable parameters are required. First of all, differences among GNSSs are defined based on their effects on users in position, velocity and timing (PVT). These differences may from message or/and signal, and are different in precision or/and format, which bring troubles when user is using the navigation resources from different GNSSs. To ameliorate the troubles caused by GNSS differences during PVT progress, the parameters which can represent these differences should be determined. These are ten parameters in this paper which form the GNSS interoperable parameter set, and each element of this set is defined as interoperable parameter. The interoperable parameters can be separated into signal level and message level, and should be broadcast to users in a common time reference and coordinate reference frame. Then, we discussed the definition, detection and calculation method of each interoperable parameter. After that, when broadcasting these parameters to users, there are three potential ways such as internet, mobile communication and commercial satellite to broadcast the interoperable parameters to users, except the providers own links. At last, we discussed the Geometric Dilution of Precision (GDOP) calculation method while employ GNSS interoperable parameters, simulation results shows that the traditional GDOP algorithm is suitable in GNSS interoperability.
Published in:	Proceedings of the ION 2013 Pacific PNT Meeting April 23 - 25, 2013 Marriott Waikiki Beach Resort & Spa Honolulu, Hawaii
Pages:	115 - 122
Cite this article:	Han, T., Wu, H., Lu, X., Wang, X., Bai, Y., Hao, W., Yang, G., "Research on GNSS Interoperable Parameters," Proceedings of the ION 2013 Pacific PNT Meeting, Honolulu, Hawaii, April 2013, pp. 115-122.
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