Canadian Active Control System Real-Time GPS Correction Service Performance Review

F. Lahaye, M. Caissy, P. Htroux, K. MacLeod, J. Popelar

Abstract:	The Canadian Active Control System (CACS) was established to improve the accuracy and efficiency of GPS positioning and to provide a direct access to the Canadian Spatial Reference System (CSRS). Precise GPS satellite ephemerides, clock corrections and earth orientation parameters are produced on a daily basis since I992 with precisions of about 10 cm, 1 ns and 0.2 mas respectively. In 1996, the infrastructure for real-time CACS data acquisition and processing at a central site was put in place to facilitate real-time computation and distribution of GPS corrections which is known as the GPS*C service. Recent point positioning results, using the GPSoC service satellite orbit and clock corrections, for stations located in central and western Canada show RMS differences with respect to ground truth better than 0.5 meter in horizontal components and better than 1 meter in the vertical.
Published in:	Proceedings of the 1997 National Technical Meeting of The Institute of Navigation January 14 - 16, 1997 Loews Santa Monica Hotel Santa Monica, CA
Pages:	695 - 699
Cite this article:	Lahaye, F., Caissy, M., Htroux, P., MacLeod, K., Popelar, J., "Canadian Active Control System Real-Time GPS Correction Service Performance Review," Proceedings of the 1997 National Technical Meeting of The Institute of Navigation, Santa Monica, CA, January 1997, pp. 695-699.
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