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Detection of Moving Targets by Passive Radar Using FM Signals on Moving Platforms

Detection of Moving Targets by Passive Radar Using FM Signals on Moving Platforms

Authors :
Kadir İleri
Necmi Serkan Tezel
Source :
Tehnički Vjesnik, Vol 29, Iss 5, Pp 1514-1521 (2022)
Publication Year :
2022
Publisher :
Faculty of Mechanical Engineering in Slavonski Brod, Faculty of Electrical Engineering in Osijek, Faculty of Civil Engineering in Osijek, 2022.

Abstract

In this study, using FM radio signals for transmitters of opportunity, detection of moving targets by passive radar on moving platforms is investigated. Ground reflectivity is modelled as discrete patch approximation with uniform distribution in phase and Rayleigh distribution in amplitude. The target echo is modelled as Doppler shifted and delayed form of the transmit signal based on the target’s angular position, range, and velocity. The clutter echoes, received by surveillance antennas, are also modelled by the superposition of Doppler shifted and delayed form of the transmit signal. Displaced Phase Center Array (DPCA) method is used for clutter rejection and moving target detection. Both matched filter and reciprocal filter are used in the pulse compression stage. The performance of the proposed method is evaluated by using an improvement factor (IF). DPCA with reciprocal filter outperforms DPCA with matched filter with the improvement value of 5,1 dB due to the reciprocal filter producing time-invariant impulse responses.

Details

Language :
English
ISSN :
13303651 and 18486339
Volume :
29
Issue :
5
Database :
Directory of Open Access Journals
Journal :
Tehnički Vjesnik
Publication Type :
Academic Journal
Accession number :
edsdoj.58296fbae013450d86d9d8e67e428f3b
Document Type :
article
Full Text :
https://doi.org/10.17559/TV-20211130125733