In-Car GNSS Jammer Localization with a Vehicular Ad-Hoc Network

D. Fontanella, R. Bauernfeind, B. Eissfeller

Abstract:	Global Navigation Satellite Systems (GNSSs) constitute a fundamental element for the new Intelligent Transport Systems (ITSs) architecture. Due to the weak signal strength of navigation signals, these applications are easily threatened by interference sources. In particular, a serious threat for these systems is represented by the so called in-car jammers, cheap devices able to obscure the navigation signal in a radius of several hundreds of meters. The introduction of standards for vehicular ad-hoc networks (VANET) enables the exchange of data regarding detected interference events which can be used to enhance the awareness of interference sources, thus increasing the reliability of future ITSs. The main idea of this work is to make use of VANETs in order to monitor and locate jammers representing a threat for vehicular commercial applications. In the first part of the paper the analytic description of the jammer localization problem is described. The technique here adopted makes use of Differential Received Signal Strength (DRSS) measurements, which can be used to estimate the jammer position through a centralized maximum likelihood method. The theoretical lower bond on the estimation accuracy is also derived. In the second part of the paper the jammer localization is performed with real measurements. The measurement campaign carried out in the Galileo test range (GATE) in Berchtesgaden (Germany) is described in details, as well as the equipment used during the experiments and the set-up of the scenarios. Finally the results obtained from the post-processing of the measurements are presented.
Published in:	Proceedings of the 25th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS 2012) September 17 - 21, 2012 Nashville Convention Center, Nashville, Tennessee Nashville, TN
Pages:	2885 - 2893
Cite this article:	Fontanella, D., Bauernfeind, R., Eissfeller, B., "In-Car GNSS Jammer Localization with a Vehicular Ad-Hoc Network," Proceedings of the 25th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS 2012), Nashville, TN, September 2012, pp. 2885-2893.
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