29 May 2014 Ultra-wideband noise radar imaging of cylindrical PEC objects using diffraction tomography
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Proceedings Volume 9077, Radar Sensor Technology XVIII; 90770J (2014); doi: 10.1117/12.2050133
Event: SPIE Defense + Security, 2014, Baltimore, Maryland, United States
Abstract
In this paper, we show that a single transmission of a random noise waveform may not sufficient to obtain a successful tomographic image of an object. In order to overcome this shortcoming, multiple independent and identically distributed (iid) random noise waveforms over a frequency range from 8 to 10 GHz are transmitted to reconstruct the final image of various objects. Diffraction tomography theorem is applied for each noise waveform transmission so that the image of the multiple objects is reconstructed based on the backward scattered field at the end of each noise waveform transmission realization. After all iid noise waveforms are transmitted, the final tomographic image of the target is reconstructed by averaging all obtained images from multiple transmissions. Several numerical simulations in the spatial frequency domain are performed, and the successful tomographic image of the multiple cylindrical PEC objects is achieved after transmission of multiple iid ultra-wideband (UWB) random noise waveforms.
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Hee Jung Shin, Ram M. Narayanan, Muralidhar Rangaswamy, "Ultra-wideband noise radar imaging of cylindrical PEC objects using diffraction tomography ", Proc. SPIE 9077, Radar Sensor Technology XVIII, 90770J (29 May 2014); doi: 10.1117/12.2050133; https://doi.org/10.1117/12.2050133
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KEYWORDS
Tomography

Image transmission

Diffraction

Scattering

Radar imaging

Fourier transforms

Image quality

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