GNSS Signal Characterization and Monitoring Using High Gain Antennas

Frank van Graas, Curtis Cohenour, and Natasha Norris, Eric Vinande, Sanjeev Gunawardena, Mark Carroll

Peer Reviewed

Abstract:	This paper identifies the role and design of high gain antennas for GNSS signal characterization and monitoring. Most GNSS monitors implemented as part of high accuracy, high integrity systems rely on signal characteristics that are generally not observable with the antenna/receiver combination used by the monitor. For example, signal deformations for GPS satellites have been characterized using a combination of high gain dish measurements [1], and one-of-a kind research systems [2] in support of certification of Ground-Based Augmentation Systems (GBAS). For receiver tracking loop design for challenged environments (urban, indoor, under foliage, during ionosphere scintillation), statistical models are needed to optimize the choice of tracking loop parameters [3]. To develop a priori probabilities for satellite failure modes, long-term monitoring is required to establish appropriate levels of trust for the use of particular satellites [4]. The key question is how these advanced monitoring and characterization requirements can be implemented using high gain GNSS antennas and associated processing equipment.
Published in:	Proceedings of the 28th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS+ 2015) September 14 - 18, 2015 Tampa Convention Center Tampa, Florida
Pages:	3426 - 3433
Cite this article:	van Graas, Frank, Cohenour, Curtis, Norris, Natasha, Vinande, Eric, Gunawardena, Sanjeev, Carroll, Mark, "GNSS Signal Characterization and Monitoring Using High Gain Antennas," Proceedings of the 28th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS+ 2015), Tampa, Florida, September 2015, pp. 3426-3433.
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