ATC Radar Interference Impact on Air Receiver

Y. Ernou, A. Renard, E. Kirby

Abstract:	One of the major problem is that GNSS signals have to cope with interference. In particular, the introduction of new GNSS signals (GALILEO, modernised GPS) requires strong analyses of potential interference that could impact future GNSS receiver behaviour. Among them, one distinction can be made : On the one hand, the in-band potential interference that are well known and for which impact has been precisely studied, and on the other hand, out of band interference, for which characterisation is less easy. The topic of this paper is to address ATC radar located out of E5/L5 band, and to discuss their potential effects on E5/L5 GNSS signals reception. First, a theoretical approach is proposed to adjust as far as possible the interference mask that should be required from future receivers using E5/L5 signals taking into account those receivers will probably have at least basic mitigation techniques implemented. The goal is there to contribute to a common understanding of out of band interference problematic for a future optimised aeronautical receiver. Then, simulated performances of such a receiver are presented in a "real" case, using an ATC radar environment close to a specific airport. The aim is of course to validate the minimum out of band receiver interference mask proposed. As a result, it shows that blanking technique often proposed for DME interference processing inside the band may also be relevant to improve the out of band interference robustness.
Published in:	Proceedings of the 16th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS/GNSS 2003) September 9 - 12, 2003 Oregon Convention Center Portland, OR
Pages:	2093 - 2101
Cite this article:	Ernou, Y., Renard, A., Kirby, E., "ATC Radar Interference Impact on Air Receiver," Proceedings of the 16th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS/GNSS 2003), Portland, OR, September 2003, pp. 2093-2101.
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