Cognitive GNSS Receiver Design: Concepts and Challenges

Nagaraja C. Shivaramaiah and Andrew G. Dempster

Abstract:	This paper introduces the concept of Global Navigation Satellite System (GNSS) receiver design based on the principles derived from the cognitive radio (CR) technology. The receiver so designed is referred to as “cognitive GNSS receiver (CGR)”. The ontology and its rationale for CGR are described by defining different layers of cognition in GNSS receivers. The architecture of the cognition/decision module is presented, and the incremental differences with respect to existing receiver design methodologies are described. Two “use cases” are studied with cost (such as resource utilisation and power consumption) per fix and the usual GNSS performance parameters (such as the Time-to-First-Fix (TTFF), the acquisition/tracking sensitivity and the solution accuracy) as metrics, and the challenges in realising a full-fledged CGR are identified. It is shown that the CGR has the potential to replace the existing GNSS receiver architectures, especially in the multi-frequency and multi-system context.
Published in:	Proceedings of the 24th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS 2011) September 20 - 23, 2011 Oregon Convention Center, Portland, Oregon Portland, OR
Pages:	2782 - 2789
Cite this article:	Shivaramaiah, Nagaraja C., Dempster, Andrew G., "Cognitive GNSS Receiver Design: Concepts and Challenges," Proceedings of the 24th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS 2011), Portland, OR, September 2011, pp. 2782-2789.
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