300 GHz Imaging System with 8 Meter Stand-off Distance and One-Dimensional Synthetic Image Reconstruction for Remote Detection of Material Defects

Andreas Keil, Jörn Peuser, Torsten Loeffler, Viktor Krozer, Jørgen Dall, Anders Kusk, Vitaliy Zhurbenko, Thomas Jensen, Peter de Maagt

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Abstract

An active stand-off imaging system operating at 230–320 GHz is presented. Imaging is achieved by combining a line array consisting of 8 sources and 16 detectors with a scanning cylindrical mirror system. The stand-off distance is 8 meters and the effective aperture of the system is 0.5 meters by 0.5 meters. Range and intensity information of the object are obtained using an active FMCW (frequency modulated continuous wave) radar principle. Data acquisition time for one line is as short as 1 ms. Synthetic image reconstruction is achieved in real-time by an embedded GPU (Graphical Processing Unit). The data indicates a spatial resolution of about 2 cm and the range resolution of about 2 mm. To analyze the performance of the system, high-precision measurements employing a vector network analyzer are presented. An outlook on further developments is given.
Original languageEnglish
Title of host publication33rd ESA Antenna Workshop on Challenges for Space Antenna Systems : Proceedings
Publication date2011
Pages1-5
Publication statusPublished - 2011
Event33rd ESA Antenna Workshop on Challenges for Space Antenna Systems - Noordwijk, Netherlands
Duration: 18 Oct 201121 Oct 2011
Conference number: 33
http://www.congrex.nl/11c07/

Workshop

Workshop33rd ESA Antenna Workshop on Challenges for Space Antenna Systems
Number33
CountryNetherlands
CityNoordwijk
Period18/10/201121/10/2011
Internet address

Cite this

Keil, A., Peuser, J., Loeffler, T., Krozer, V., Dall, J., Kusk, A., Zhurbenko, V., Jensen, T., & de Maagt, P. (2011). 300 GHz Imaging System with 8 Meter Stand-off Distance and One-Dimensional Synthetic Image Reconstruction for Remote Detection of Material Defects. In 33rd ESA Antenna Workshop on Challenges for Space Antenna Systems: Proceedings (pp. 1-5)