L-Band Anomaly Detection in GPS

Kenneth Brown Jr., Ming Kang Chien, William Mathon, Steven Hutsell and Christopher Shank

Abstract:	In the past several years much attention has been focused on improving the navigation service provided by GPS. Over time, substantial improvements have been made in navigation accuracy, availability, reliability and integrity. This paper reports on a recent improvement in navigation monitoring at the Master Control Station (MCS) of the GPS Control Segment and the effects it has had on GPS integrity. This improvement is a new software i%nction, LBand Monitor, which continuously scans, in real-time, ranging measurements and navigation data for anomalies, alerts operators when anomalies are found and provides real-time plots of ranging errors. The anomaly detection algorithms are described. Test results and recent experience at the MCS are presented. Finally the operations strategy for utilizing the L-Band Monitor to improve GPS integrity is outlined.
Published in:	Proceedings of the 51st Annual Meeting of The Institute of Navigation (1995) June 5 - 7, 1995 Antlers Doubletree Hotel Colorado Springs, CO
Pages:	107 - 117
Cite this article:	Brown, Kenneth, Jr., Chien, Ming Kang, Mathon, William, Hutsell, Steven, Shank, Christopher, "L-Band Anomaly Detection in GPS," Proceedings of the 51st Annual Meeting of The Institute of Navigation (1995), Colorado Springs, CO, June 1995, pp. 107-117.
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