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VESAS: a novel concept for fully-electronic passive MW imaging

Schreiber, Eric and Peichl, Markus and Jirousek, Matthias and Süss, Helmut (2013) VESAS: a novel concept for fully-electronic passive MW imaging. In: Proceedings of SPIE Defense, Security, and Sensing 2013, 8715 (87150J). SPIE Digital Library. SPIE Defense, Security, and Sensing 2013, 2013-04-29 - 2013-05-03, Baltimore, USA. doi: 10.1117/12.2016990.

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Official URL: http://proceedings.spiedigitallibrary.org/proceeding.aspx?articleid=1693496


These days passive microwave (MW) remote sensing has found many applications. For example, in Earth observation missions, it is possible to estimate the salinity of oceans, the soil moisture of landscapes, or to extract atmospheric parameters like the liquid water content of clouds. Due to the penetration capabilities of microwaves through many dielectric materials, and the purely passive character of this kind of remote sensing, this technique nowadays is considered as well in many security and reconnaissance applications (e.g. observation of sensitive areas, detection of concealed objects, trough-wall imaging, etc.). Presently different imaging principles for MW radiometry are possible. Most of them still are based on pure mechanical scanning or they combine this with electronic scanning by using parts of a focal plane array. Due to many advantages, the technological trend is going towards fully-electronic beam steering or two-dimensional focal plane arrays. These systems are able to achieve high frame rates, but they are still very expensive because of a significantly higher number of receiver modules, compared to a mechanical scanning system. In our approach a novel concept for a low cost Ka-band fully-electronic MW imaging radiometer system is introduced. It is based on a combination of beam steering by frequency shift using a slotted waveguide antenna, and the application of aperture synthesis. In the following a proof of concept is outlined by presenting different MW imaging measurement results, using this kind of imaging principle.

Item URL in elib:https://elib.dlr.de/81711/
Document Type:Conference or Workshop Item (Speech)
Title:VESAS: a novel concept for fully-electronic passive MW imaging
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Peichl, MarkusUNSPECIFIEDhttps://orcid.org/0000-0003-0226-9786UNSPECIFIED
Jirousek, MatthiasUNSPECIFIEDhttps://orcid.org/0000-0003-2106-9245UNSPECIFIED
Date:May 2013
Journal or Publication Title:Proceedings of SPIE Defense, Security, and Sensing 2013
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
Publisher:SPIE Digital Library
Series Name:Passive and Active Millimeter-Wave Imaging XVI
Keywords:Aperture synthesis, slotted-waveguide antenna, fully-electronic imaging, frequency scan, real-time imaging, low-cost, radiometry, minimal redundant, wide swath
Event Title:SPIE Defense, Security, and Sensing 2013
Event Location:Baltimore, USA
Event Type:international Conference
Event Start Date:29 April 2013
Event End Date:3 May 2013
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Earth Observation
DLR - Research area:Raumfahrt
DLR - Program:R EO - Earth Observation
DLR - Research theme (Project):R - Security-relevant Earth Observation
Location: Oberpfaffenhofen
Institutes and Institutions:Microwaves and Radar Institute > Reconnaissance and Security
Deposited By: Schreiber, Eric
Deposited On:06 Nov 2014 10:30
Last Modified:24 Apr 2024 19:48

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