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Experimental analysis of high resolution indoor THz SAR imaging
University of Duisburg-Essen, DEU.
University of Duisburg-Essen, DEU.
Blekinge Institute of Technology, Faculty of Engineering, Department of Mathematics and Natural Sciences.ORCID iD: 0000-0003-3945-8951
University of Duisburg-Essen, DEU.
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2020 (English)In: WSA 2020 - 24th International ITG Workshop on Smart Antennas, VDE Verlag GmbH , 2020Conference paper, Published paper (Refereed)
Abstract [en]

Synthetic Aperture Radar (SAR) technology is most commonly used in the frequency span of sub-30 GHz which provides the spatial resolution in the range of sub-cm. This technology is being extended to higher frequencies such as millimeter wave and THz region to achieve higher resolution in the range of sub-mm. This expands the SAR applications for material characterization, classification and sub-mm localization. However, the region is suitable for short propagation distance such as an indoor environment. Therefore, to investigate the achieved resolution and quality of the SAR images at THz, an indoor SAR testbed based on vector network analyzer has been setup for the measurements. This paper explains the indoor SAR geometry and describes the associated testbed along with the system parameters. The measurements are performed at a centre frequency of 275 GHz with a bandwidth of 110 GHz. The measurement results are analyzed for the theoretical resolution with the Backprojection Algorithm and the findings are presented in this paper. The sub-mm spatial resolution imaging of two small size metallic objects are performed. © WSA 2020.

Place, publisher, year, edition, pages
VDE Verlag GmbH , 2020.
Keywords [en]
Backprojection algorithm, High resolution imaging, Indoor radar, Millimeter wave, Radar imaging, Synthetic aperture radar, Terahertz imaging, Electric network analyzers, Image resolution, Millimeter waves, Terahertz waves, Testbeds, Backprojection algorithms, Experimental analysis, Higher frequencies, Indoor environment, Material characterizations, Short propagation, Spatial resolution, Vector network analyzers
National Category
Signal Processing
Identifiers
URN: urn:nbn:se:bth-22360Scopus ID: 2-s2.0-85096803774ISBN: 9783800752003 (print)OAI: oai:DiVA.org:bth-22360DiVA, id: diva2:1611464
Conference
24th International ITG Workshop on Smart Antennas, WSA 2020, Hamburg, Germany, 18 February 2020 through 20 February 2020
Available from: 2021-11-15 Created: 2021-11-15 Last updated: 2021-11-15Bibliographically approved

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Vu, Viet ThuyPettersson, Mats

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