Abstract
The mitigation of radio frequency interference (RFI) has a fundamental role in global navigation satellite system (GNSS) applications, especially when a high level of availability is required. Several electromagnetic sources, in fact, might degrade the performance of the global positioning system (GPS) and Galileo receivers, and their effects can be either in-band (i.e., secondary harmonics generated by transmitters of other communication systems due to non-linearity distortions) or out-of-band (i.e., strong signals that occupy frequency bandwidths very close to GNSS bands). We investigated the effects of real out-of-band signals on GNSS receivers and analyzed the impact on the overall receiver chain in order to evaluate the impact of the interference source. In particular, the analysis focuses on the spectrum at the front-end output, on the automatic gain control (AGC) behavior, as well as on the digital processing stages (signal acquisition and tracking) at the analog digital converter (ADC) output. This study refers to several experiments and data collections performed in interfered areas of downtown Torino (Italy). The obtained results underline how digital/analog TV transmissions represent a potential interference source for GNSS applications and might be critical for the safety of life services.
Similar content being viewed by others
References
Anonymous (2006) NordNav R-30 GPS receivers user manuals, NordNav Technologies AB, Aurorum 2, SE-97775 Luleå, Sweden
Bastide F, Akos D, Macabiau C, Roturier B (2003) Automatic gain control (AGC) as an interference assessment tool. In: Proceedings of ION GPS, Portland, Oregon, 2003
Buck T, Sellick G (1997) GPS RF interference via a TV video signal. In: Proceeding of ION GPS, Kansas City, Missouri, 1997
De Bakker PF, Samson J, Joosten P, Spelat M, Hoolreiser M, Ambrosius B (2006) Effect of radio frequency interference on GNSS receiver output. ESA workshop on satellite navigation user equipment technologies NAVITEC, ESA/ESTEC, Noordwijk (NL)
ETSI EN 300 744 (2004), ETSI EN 300 744 v1.5.1 European Standard (Telecommunication series) Digital video broadcasting (DVB); framing structure, channel coding and modulation for digital terrestrial television, European Telecommunications Standards Institute, 2004–2006
European Radiocommunication Committee (2003) within the European Conference of Postal and Telecommunication Administrations (CEPT), The European Table of Frequency Allocations and Utilizations covering the frequency range 9–275 GHz, Lisboa January 2002, revised 2003 (Dublin)
GAL OS SIS ICD (2006) Signal-In-Space Interface Control Document GAL OS SIS ICD/D.0, European Space Agency/Galileo Joint Undertaking, 23 May 2006
Groves PD (2005) GPS signal-to-noise measurement in weak signal and high-interference environments. J Inst Navigat, May 2005
ICD-GPS-200D (2004) Interface Control Document, ICRev.D, IRN-200D-001, Navstar GPS Joint Program Office/ARINC Engineering Services, 7 December 2004
Kaplan DE (1996) Understanding GPS: principles and applications. Artech House, Norwood, MA, ISBN: 0890067937
Mignone V, Morello A, Visintin M (2002) Lo standard DVB-T per la televisione digitale terrestre. Elettronica e Telecomunicazioni N°1, Centro Ricerche e Innovazione Tecnologica RAI, April 2002
Misra P, Enge P (2004) Global positioning system. Signal measurements and performance. Ganga-Jamuna Press, ISBN: 0-9709544-1-7
Acknowledgments
The authors would like to thank Ten. Co. Ing. Damiano Chiappa and Ten. Co. Ing. Francesco Nunziante for their help during the measurement campaigns and data processing. The constructive comments of one anonymous reviewer and Larry Young of the Jet Propulsion Laboratory, Pasadena, California, are greatly appreciated.
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Motella, B., Pini, M. & Dovis, F. Investigation on the effect of strong out-of-band signals on global navigation satellite systems receivers. GPS Solut 12, 77–86 (2008). https://doi.org/10.1007/s10291-007-0085-5
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s10291-007-0085-5