Research Papers

Short-range ground-based synthetic aperture radar imaging: performance comparison between frequency-wavenumber migration and back-projection algorithms

[+] Author Affiliations
Enes Yigit

Mersin University, Department of Electrical-Electronics Engineering, 33343 Yenisehir, Mersin, Turkey

Sevket Demirci

Mersin University, Department of Electrical-Electronics Engineering, 33343 Yenisehir, Mersin, Turkey

Caner Özdemir

Mersin University, Department of Electrical-Electronics Engineering, 33343 Yenisehir, Mersin, Turkey

Mustafa Tekbaş

Material Institute, Millimeter-wave and Terahertz Technologies Research Laboratory, TUBITAK-MRC, 41470 Gebze, Kocaeli, Turkey

J. Appl. Remote Sens. 7(1), 073483 (Nov 05, 2013). doi:10.1117/1.JRS.7.073483
History: Received April 28, 2013; Revised September 14, 2013; Accepted October 9, 2013
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Abstract.  Two popular synthetic aperture radar (SAR) reconstruction algorithms, namely the back-projection (BP) and the frequency wavenumber (ωk) algorithms, were tested and compared against each other, especially for their use in ground-based (GB) SAR applications directed to foreign object debris removal. For this purpose, an experimental setup in a semi-anechoic chamber room was accomplished to obtain near-field SAR images of objects on the ground. Then, the 90 to 95 GHz scattering data were acquired by using a stepped frequency continuous-wave radar operation. The performances of the setup and the imaging algorithms were then assessed by exploiting various metrics including point spread function, signal-to-clutter ratio, integrated side-lobe ratio, and computational complexity. Results demonstrate that although both algorithms produce almost accurate images of targets, the BP algorithm is shown to be superior to the ωk algorithm due to its some inherent advantages specifically suited for short-range GB-SAR applications.

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© 2013 Society of Photo-Optical Instrumentation Engineers

Citation

Enes Yigit ; Sevket Demirci ; Caner Özdemir and Mustafa Tekbaş
"Short-range ground-based synthetic aperture radar imaging: performance comparison between frequency-wavenumber migration and back-projection algorithms", J. Appl. Remote Sens. 7(1), 073483 (Nov 05, 2013). ; http://dx.doi.org/10.1117/1.JRS.7.073483


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