elib
DLR-Header
DLR-Logo -> http://www.dlr.de
DLR Portal Home | Imprint | Contact | Deutsch
Fontsize: [-] Text [+]

Passive Terahertz Wave Imaging of Concealed Threats with a Single Semiconductor Bolometer and an Array of Superconducting Bolometers

Semenov, Alexey and Richter, Heiko and Hübers, Heinz-Wilhelm and Zakosarenko, Vjatcheslav and May, Torsten and Anders, Susanne and Schultz, M. and Meyer, Hans-Georg and Kreysa, Ernst and Jethava, N. and Il'in, Konstantin and Siegel, Michael (2006) Passive Terahertz Wave Imaging of Concealed Threats with a Single Semiconductor Bolometer and an Array of Superconducting Bolometers. In: 4th ESA Workshop on Millimetre-Wave Technology and Applications, WPP-258, pp. 411-416. ESA. 4th ESA Workshop on Millimre-Wave Technology and Applications, 2005-02-15 - 2006-02-17, Espoo (Finnland).

Full text not available from this repository.

Abstract

Detection of concealed threats is of prime importance for public security. In short range applications, passive imagers operating at millimeter wavelengths have been demonstrated to fulfill this task. However, for larger distances, they will suffer from limited spatial resolution and sensitivity. In this paper we demonstrate passive indoor imaging at a distance up to 7 meters using radiation in the teraherz range and a commercial Silicon bolometer. Images with a resolution of about 2 cm were taken using a mechanical scanner, which moved the field of view of the detector across the object under investigation. Although it was possible to detect a metal weapon hidden under clothing, the frame time was restricted by the sensitivity of the bolometer. To increase the imaging speed, we implemented a focal-plane array of millimeter-wave superconducting transition-edge sensors red out via superconducting quantum interference device current sensors. Implementation of the array drastically reduced the acquisition time.

Document Type:Conference or Workshop Item (Speech)
Title:Passive Terahertz Wave Imaging of Concealed Threats with a Single Semiconductor Bolometer and an Array of Superconducting Bolometers
Authors:
AuthorsInstitution or Email of Authors
Semenov, AlexeyUNSPECIFIED
Richter, HeikoUNSPECIFIED
Hübers, Heinz-WilhelmUNSPECIFIED
Zakosarenko, VjatcheslavInstitute for Physical High Technology, Jena, Germany
May, TorstenInstitute for Physical High Technology, Jena, Germany
Anders, SusanneInstitute for Physical High Technology, Jena, Germany
Schultz, M.Institute for Physical High Technology, Jena, Germany
Meyer, Hans-GeorgInstitute for Physical High Technology, Jena, Germany
Kreysa, ErnstMax-Planck Institute for Radioastronomy, Bonn, Germany
Jethava, N.Max-Planck Institute for Radioastronomy, Bonn, Germany
Il'in, KonstantinUniversity of Karlsruhe, Germany
Siegel, MichaelUniversity of Karlsruhe, Germany
Date:15 February 2006
Journal or Publication Title:4th ESA Workshop on Millimetre-Wave Technology and Applications
Refereed publication:No
In SCOPUS:No
In ISI Web of Science:No
Volume:WPP-258
Page Range:pp. 411-416
Publisher:ESA
Status:Published
Keywords:passive imaging, terahertz waves, bolometers and arrays
Event Title:4th ESA Workshop on Millimre-Wave Technology and Applications
Event Location:Espoo (Finnland)
Event Type:international Conference
Event Dates:2005-02-15 - 2006-02-17
Organizer:VTT Technical Research Center of Finnland
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Space (old)
HGF - Program Themes:W EW - Erforschung des Weltraums
DLR - Research area:Space
DLR - Program:W EW - Erforschung des Weltraums
DLR - Research theme (Project):W - Projekt SOFIA (old)
Location: Berlin-Adlershof
Institutes and Institutions:Institute of Planetary Research > Terahertz and Infrared Sensors
Deposited By: Prof.Dr. Alexey Semenov
Deposited On:26 Jun 2006
Last Modified:27 Apr 2009 12:56

Repository Staff Only: item control page

Browse
Search
Help & Contact
Informationen
electronic library is running on EPrints 3.3.12
Copyright © 2008-2012 German Aerospace Center (DLR). All rights reserved.