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Near-field microwave imaging radiometers for security applications

Peichl, Markus and Dill, Stephan and Jirousek, Matthias and Süß, Helmut (2008) Near-field microwave imaging radiometers for security applications. In: European Symposium on Synthetic Aperture Radar. EUSAR 2008, 2008-06-02 - 2008-06-05, Friedrichshafen, Germany.

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Microwaves in the range of 1-300 GHz are used in many respects for remote sensing applications. The imaging of persons and critical infrastructures for security purposes is of increasing interest particularly for transportation services or public events. Personnel inspection with respect to weapons and explosives becomes an important mean concerning terrorist attacks. Microwaves can penetrate clothing and a multitude of other materials and al-low the detection of hidden objects by monitoring dielectric anomalies. Passive microwave remote sensing allows a daytime independent non-destructive observation and examination of the objects of interest under nearly all weather conditions without artificial exposure of persons or areas. Some imaging results of passive experimental equipment are shown. The first system is a millimetre-wave near-field scanner used for personnel screening in order to detect hidden objects. The second system presently under final construction operates as an imaging spectrometer at the lower microwaves. Since a hybrid technology between a scanner and the principle of aperture synthesis is used, both near and far-field operation is applicable by adequate data processing. First test images using most of the system electronics are shown.

Document Type:Conference or Workshop Item (Speech, Paper)
Title:Near-field microwave imaging radiometers for security applications
AuthorsInstitution or Email of Authors
Jirousek, MatthiasUNSPECIFIED
Date:June 2008
Journal or Publication Title:European Symposium on Synthetic Aperture Radar
Series Name:CD-ROM
Keywords:microwaves, critical infrastructures, imaging of persons, near field, far field, millimetre-wave scanner, aperture synthesis
Event Title:EUSAR 2008
Event Location:Friedrichshafen, Germany
Event Type:international Conference
Event Dates:2008-06-02 - 2008-06-05
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Space (old)
HGF - Program Themes:W EO - Erdbeobachtung
DLR - Research area:Space
DLR - Program:W EO - Erdbeobachtung
DLR - Research theme (Project):W - Projekt sicherheitsrelevante Erdbeobachtung (old)
Location: Oberpfaffenhofen
Institutes and Institutions:Microwaves and Radar Institute > Reconnaissance and Security
Microwaves and Radar Institute
Deposited By: Dr.-Ing. Markus Peichl
Deposited On:02 Feb 2009
Last Modified:27 Apr 2009 15:47

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