G. Galati, M. Leonardi, C. Cosenza, F. Zito, F. Gottifredi
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Evaluation of the Interferences of GNSS (Galileo/GPS) signals on Air Traffic Control Radar and Wind Profiler Radar
GNSS systems use frequency band close to that of L-band primary surveillance radar for Air Traffic Contro, i.e. 1250-1350 MHz, and of some Wind Profiler Radar (1290 MHz). According to the World Radio Communication Conference 2003 (WRC-03) resolution, in order to protect Aeronautic Radio Navigation System (ARNS) systems, Radio Navigation Satellite System (RNSS) administrations shall ensure that the equivalent power flux density (pfd) level produced by all RNSS space stations of all systems does not exceed - 121.5 dB(W/m2) in any 1 MHz band. However, in order to assess the performance of ATC L-Band radar, DME and Wind Profiler Radar with GNSS interfering signals, it is useful not only to reason in terms of pfd but, rather, to model (at least for some critical cases) the Radar receiver chains and evaluate the impact of the interfering signal (if present) on every stage of the receiver and on the overall output, i.e at the user level.
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