Impact of DME/TACAN on GNSS L5/E5a Receiver

Axel Garcia‐Pena, Christophe Macabiau, Olivier Julien, Mikaël Mabilleau, Pierre Durel

2020Proceedings of the Institute of Navigation ... International Technical Meeting/Proceedings of the ... International Technical Meeting of The Institute of Navigation18 citationsDOI Open Access PDF

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.

Topics & Concepts

GNSS applicationsDegradation (telecommunications)Bandwidth (computing)Interference (communication)Computer scienceElectronic engineeringTime domainEngineeringGlobal Positioning SystemTelecommunicationsChannel (broadcasting)Computer visionGNSS positioning and interferenceSoil Moisture and Remote SensingAdvanced Computational Techniques and Applications