Impact of DME/TACAN on GNSS L5/E5a Receiver

Axel Garcia-Pena, Christophe Macabiau, Olivier Julien, Mikael Mabilleau, Pierre Durel

Abstract: GNSS L5/E5a interference environment is dominated by DME/TACAN and JTIDS/MIDS pulses causing a degradation of the effective C/N0 observed by the receiver. A time-domain blanker is implemented to mitigate their impact. RTCA DO-292 proposes a model to compute the C/N0 degradation of the received useful signal by the increase of the noise PSD. This paper focuses on the impact of DME/TACAN RFI signals. Simulated results as well as predicted results are presented for US and Europe scenarios. The predicted results are calculated from an updated C/N0 degradation formula with respect to RTCA DO292 proposed formula. The impact of GNSS receiver RFFE filter bandwidth and blanker threshold are evaluated.
Published in: Proceedings of the 2020 International Technical Meeting of The Institute of Navigation
January 21 - 24, 2020
Hyatt Regency Mission Bay
San Diego, California
Pages: 207 - 221
Cite this article: Garcia-Pena, Axel, Macabiau, Christophe, Julien, Olivier, Mabilleau, Mikael, Durel, Pierre, "Impact of DME/TACAN on GNSS L5/E5a Receiver," Proceedings of the 2020 International Technical Meeting of The Institute of Navigation, San Diego, California, January 2020, pp. 207-221.
https://doi.org/10.33012/2020.17207
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