Interference Detection and Localization within the GNSS Environmental Monitoring System (GEMS) – System Update and Latest Field Test Results

Ediz Cetin, Ryan J.R. Thompson, Matthew Trinkle, Andrew G. Dempster

Abstract:	Modern infrastructure increasingly relies on the positioning and timing capabilities provided by the Global Navigation Satellite Systems (GNSS) in particular GPS, making GNSS itself a critical infrastructure. Given their low received signal power levels, GNSS signals are vulnerable to unintentional and intentional interference, hence the detection, localization and elimination of interference to GNSS is of paramount importance. The GNSS Environmental Monitoring System (GEMS) II provides the capability to detect and localize interferers in real time in a given area. The system consists of a number of spatially distributed sensor nodes incorporating antenna arrays connected to a central processing unit. Interference is localized using hybrid Angle-of-Arrival (AOA) and Time-Difference-of-Arrival (TDOA) techniques. In this paper we provide a system update and report on the latest field test trials, detailing and evaluating the performance of the GEMS II system in detecting and localizing different types and powers of interferers in real time.
Published in:	Proceedings of the 27th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS+ 2014) September 8 - 12, 2014 Tampa Convention Center Tampa, Florida
Pages:	3449 - 3460
Cite this article:	Cetin, Ediz, Thompson, Ryan J.R., Trinkle, Matthew, Dempster, Andrew G., "Interference Detection and Localization within the GNSS Environmental Monitoring System (GEMS) – System Update and Latest Field Test Results," Proceedings of the 27th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS+ 2014), Tampa, Florida, September 2014, pp. 3449-3460.
Full Paper:	ION Members/Non-Members: 1 Download Credit Sign In