1. The Use of the Reassignment Technique in the Time-Frequency Analysis Applied in VHF-Based Passive Forward Scattering Radar.
- Author
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Płotka, Marek, Abratkiewicz, Karol, Malanowski, Mateusz, Samczyński, Piotr, and Kulpa, Krzysztof
- Subjects
- *
BISTATIC radar , *DIGITAL video broadcasting , *PASSIVE radar , *RADAR , *TIME-frequency analysis , *HOUGH transforms - Abstract
This paper presents the application of the time-frequency (TF) reassignment technique in passive forward scattering radar (FSR) using Digital Video Broadcasting – Terrestrial (DVB-T) transmitters of opportunity operating in the Very High Frequency (VHF) band. The validation of the proposed technique was done using real-life signals collected by the passive radar demonstrator during a measurement campaign. The scenario was chosen to test detection ranges and the capability of estimating the kinematic parameters of a cooperative airborne target in passive FSR geometry. Additionally, in the experiment the possibility of utilizing FSR geometry in foliage penetration conditions taking advantage of the VHF band of a DVB-T illuminator of opportunity was tested. The results presented in this paper show that the concentrated (reassigned) energy distribution of the signal in the TF domain allows a more precise target Doppler rate to be estimated using the Hough transform. [ABSTRACT FROM AUTHOR]
- Published
- 2020
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