Interference Detection by Means of the Software Defined Radio

Lukas Marti and Frank van Graas

Abstract:	The Federal Aviation Administration actively pursues the migration to a Global Positioning System (GPS) based navigation system for aeronautical use. As with any safety-critical application, any system failure mode, which might lead to Misleading Information (MI) for the user, must be detected at a high level of confidence. A major concern is a possible system failure mode due to intentional or unintentional radio frequency interference. This paper addresses the derivation of test statistics to perform interference detection at given confidence levels by means of the Software Defined Radio (SDR). To verify the algorithm, experimental results are presented. The paper is concluded with the examination of observed interference in the GPS band, which led to a brief loss-oflock condition in a NovAtel receiver installed at Ohio University.
Published in:	Proceedings of the 17th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS 2004) September 21 - 24, 2004 Long Beach Convention Center Long Beach, CA
Pages:	99 - 109
Cite this article:	Marti, Lukas, van Graas, Frank, "Interference Detection by Means of the Software Defined Radio," Proceedings of the 17th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS 2004), Long Beach, CA, September 2004, pp. 99-109.
Full Paper:	ION Members/Non-Members: 1 Download Credit Sign In