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

Enes Yigit; Sevket Demirci; Caner Ozdemir; Mustafa Tekbas

doi:10.1117/1.JRS.7.073483

5 November 2013 Short-range ground-based synthetic aperture radar imaging: performance comparison between frequency-wavenumber migration and back-projection algorithms

Enes Yigit, Sevket Demirci, Caner Ozdemir, Mustafa Tekbas

Author Affiliations +

Journal of Applied Remote Sensing, Vol. 7, Issue 1, 073483 (November 2013). https://doi.org/10.1117/1.JRS.7.073483

Abstract

Two popular synthetic aperture radar (SAR) reconstruction algorithms, namely the back-projection (BP) and the frequency wavenumber (ω−k) 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 ω−k algorithm due to its some inherent advantages specifically suited for short-range GB-SAR applications.

Citation Download Citation

Enes Yigit, Sevket Demirci, Caner Ozdemir, and Mustafa Tekbas "Short-range ground-based synthetic aperture radar imaging: performance comparison between frequency-wavenumber migration and back-projection algorithms," Journal of Applied Remote Sensing 7(1), 073483 (5 November 2013). https://doi.org/10.1117/1.JRS.7.073483

Published: 5 November 2013

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