Interference Mitigation of Replay Attacks in GPS Receiver using of Finite Impulse Response Filter

The vulnerability of civil GPS receiver to interference may be intentional or unintentional. Among all types of interference, replay attack intended as the most dangerous intentional one. The signal structure of replay attack is almost the same with the satellite signal. The interference effects can...

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Bibliographic Details
Published inIranian journal of electrical & electronic engineering Vol. 13; no. 4; pp. 318 - 328
Main Authors Z. Shokhmzan, M. R. Mosavi, M. Moazedi
Format Journal Article
LanguageEnglish
Published Iran University of Science and Technology 01.12.2017
Subjects
FIR Filter
Frequency Domain
GPS
Interference Mitigation
PDOP
Time Domain.
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Summary:The vulnerability of civil GPS receiver to interference may be intentional or unintentional. Among all types of interference, replay attack intended as the most dangerous intentional one. The signal structure of replay attack is almost the same with the satellite signal. The interference effects can be reduce with the design of an appropriate filter in the receiver. This paper presents two methods based on Finite Impulse Response (FIR) filter in frequency and time domain to mitigate the interference effect on GPS signals. Designed FIR filter protects GPS against the replay attack. The suggested filter is applied in the acquisition of the receiver. The proposed method has been implemented on collected dataset. The results show that the proposed algorithms significantly reduce interference. Also, they improve Position Dilution of Precision (PDOP) parameter. Based on the results, the FIR filter technique in time domain has better performance than the frequency domain.
ISSN:1735-2827
2383-3890
DOI:10.22068/IJEEE.13.4.318