An Improved Ionosphere Scintillation Event Detection and Automatic Trigger for GNSS Data Collection Systems

S. Taylor, Y. Morton, Y. Jiao, J. Triplett, W. Pelgrum

Abstract:	Ionosphere scintillations impact the performance of GNSS receivers. To gain a better understanding of how scintillations affect GNSS signals, a GNSS receiver array has been established at Gakona, Alaska to collect scintillation data. Collection of continuous raw IF samples is prohibitive because of the large amount of data involved. An autonomous data collection system is needed to record data only when there are scintillation activities. Recently, we developed a number of scintillation event threshold triggers for the GNSS receiver array using low rate outputs from a commercial receiver. When the indicator surpasses the threshold, the system will declare that there is a scintillation event and data collected by RF frontend sampling devices are then recorded to storage for later processing and analysis. Overly conservative triggers lead to a large number of missed detections whereas overly aggressive triggers result in large number of false alarms. This paper presents an improved scintillation event trigger based upon a detailed analysis of the commercial receiver data collected at the GNSS array site.
Published in:	Proceedings of the 2012 International Technical Meeting of The Institute of Navigation January 30 - 1, 2012 Marriott Newport Beach Hotel & Spa Newport Beach, CA
Pages:	1563 - 1569
Cite this article:	Taylor, S., Morton, Y., Jiao, Y., Triplett, J., Pelgrum, W., "An Improved Ionosphere Scintillation Event Detection and Automatic Trigger for GNSS Data Collection Systems," Proceedings of the 2012 International Technical Meeting of The Institute of Navigation, Newport Beach, CA, January 2012, pp. 1563-1569.
Full Paper:	ION Members/Non-Members: 1 Download Credit Sign In