Improved Tropospheric Delay Estimation at the Master Control Station

Curtis Hay and Jeffrey Wong

Abstract:	After almost a decade of disuse, the GPS Joint Program Office (JPO) is advocating the use of telemetered local weather sensor data in the calculation of tropospheric delay estimates used in the pseudorange inputs to the Kalman filter at the GPS Master Control Station (MCS). Evaluation of the tropospheric delay algorithm, currently implemented in the MCS, indicates higher fidelity models are available. The GPS JPO is in the process of reinstalling environmental sensors at Operational Control Segment (OCS) Monitor Stations (MSs) and updating the tropospheric delay estimate algorithm. Once realized, these activities should result in a noticeable improvement in Kalman filter state accuracy.
Published in:	Proceedings of the IAIN World Congress and the 56th Annual Meeting of The Institute of Navigation (2000) June 26 - 28, 2000 The Catamaran Resort Hotel San Diego, CA
Pages:	755 - 761
Cite this article:	Hay, Curtis, Wong, Jeffrey, "Improved Tropospheric Delay Estimation at the Master Control Station," Proceedings of the IAIN World Congress and the 56th Annual Meeting of The Institute of Navigation (2000), San Diego, CA, June 2000, pp. 755-761.
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