Preliminary results of FENIX: front-end GNSS interference eXcisor

January 1, 2016·
Jorge Querol
,
E. M. Julian
,
R. Onrubia
,
A. Alonso-Arroyo
,
D. Pascual
,
A. Camps
· 1 min read
DOI
Abstract
The number of applications based on Global Navigation Satellite Systems (GNSS) has been increasing in last years. In the passive remote sensing field, GNSS-Reflectometry (GNSS-R) systems have been revealed as cost-effective solutions to retrieve a number of geophysical parameters. However, GNSS-based devices are prone to suffer from Radio-Frequency Interference (RFI) effects due to the extreme low power of involved signals. This paper shows the preliminary results of the Front-End GNSS Interference eXcisor (FENIX), a system designed to mitigate the RFI problem in GNSS-based systems. FENIX is composed by two stages: the RF stage and the SP stage. The former conditions the signal from the antenna, throw the SP stage, and to the receiver; and the latter excises the RFI from the GNSS signal combining thresholding with the Multiresolution Fourier Transform (MFT). Preliminary results show that FENIX can mitigate up to 30 dB a chirp RFI signal generated from commercial jammers.
Type
Publication
2016 IEEE International Geoscience and Remote Sensing Symposium (IGARSS)
publication

Abstract & Overview

The number of applications based on Global Navigation Satellite Systems (GNSS) has been increasing in last years. In the passive remote sensing field, GNSS-Reflectometry (GNSS-R) systems have been revealed as cost-effective solutions to retrieve a number of geophysical parameters. However, GNSS-based devices are prone to suffer from Radio-Frequency Interference (RFI) effects due to the extreme low power of involved signals. This paper shows the preliminary results of the Front-End GNSS Interference eXcisor (FENIX), a system designed to mitigate the RFI problem in GNSS-based systems. FENIX is composed by two stages: the RF stage and the SP stage. The former conditions the signal from the antenna, throw the SP stage, and to the receiver; and the latter excises the RFI from the GNSS signal combining thresholding with the Multiresolution Fourier Transform (MFT). Preliminary results show that FENIX can mitigate up to 30 dB a chirp RFI signal generated from commercial jammers.

Publication Metadata

  • Authors: Jorge Querol, E. M. Julian, R. Onrubia, A. Alonso-Arroyo, D. Pascual, A. Camps
  • Venue: 2016 IEEE International Geoscience and Remote Sensing Symposium (IGARSS) (2016)
  • Research Areas: RFI Mitigation & GNSS Security, GNSS & Positioning
  • DOI: 10.1109/igarss.2016.7730470
RFI Mitigation & GNSS Security GNSS & Positioning