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An Integrated Pulsed Interference Mitigation for GNSS Receivers

Published online by Cambridge University Press:  25 March 2008

Esther Anyaegbu ,
Gary Brodin ,
John Cooper ,
Enrique Aguado  and
Said Boussakta
Esther Anyaegbu*
Affiliation:
(The University of Leeds)
Gary Brodin
Affiliation:
(The University of Leeds)
John Cooper
Affiliation:
(The University of Leeds)
Enrique Aguado
Affiliation:
(The University of Leeds)
Said Boussakta
Affiliation:
(The University of Leeds)
*
(Email: [email protected])
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Abstract

The E5/L5 frequency band for the new Global Navigation Satellite System (GNSS) signals is crowded with aeronautical pulsed emitters. This results in severe degradation of the performance of GNSS receivers. This paper describes a novel technique for estimating and suppressing time-varying pulsed interference signals such as the Distance Measuring Equipment (DME)/Tactical Air Navigation (TACAN) signals generated by these pulsed emitters. The proposed technique involves the integration of the time-based pulse blanker and the wavelet-based interference mitigation technique. Aviation is the key application considered although many other applications such as transport management and navigation, environmental monitoring, and telecommunications would benefit. A performance assessment of the new technique is carried out by determining the degradation of the carrier-to-noise ratio (CNR) at the output of the correlator. The performance of the new technique is compared with the traditional time domain pulse blanking approach. The results show that the proposed technique performs better than both the time domain pulse blanker and the wavelet-based interference mitigation algorithm. Hence, the integrated pulse mitigation approach can be employed to provide an enhanced degree of interference detection and suppression.

Keywords

GNSSWavelets
Type
Research Article
Information
The Journal of Navigation , Volume 61 , Issue 2 , April 2008 , pp. 239 - 255
Copyright
Copyright © The Royal Institute of Navigation 2008

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References

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