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Measurement results from stand-off sensing of material characteristics by polarimetric MMW radiometry

Dill, Stephan und Peichl, Markus (2019) Measurement results from stand-off sensing of material characteristics by polarimetric MMW radiometry. In: Proceedings of SPIE, 11164, 403-1-403-7. SPIE Security + Defence 2019, 2019-09-09 - 2019-09-12, Strasbourg, Frankreich. doi: 10.1117/12.2534030.

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Kurzfassung

The characterization of dielectric materials is of great importance for many applications, being for instance quality control during product fabrication or status control of outside constructions over time. In many outside situations the objects of interest have limited accessibility, and the investigation has to be done without destruction of any part of the object and without any health risks for an operator. Hence remote sensing from stand-off position is desirable, and the use of microwaves, millimeter-waves or THz waves offers some penetration capability into matter, depending on its chemical and physical decomposition and of course frequency. Many objects of interest consist of a dielectric coating or enclosure, which can electromagnetically be treated as a dielectric layered structure or a dielectric slab surrounded by air. In the recent past an approach has been established using polarimetric millimeter-wave radiometry for extracting the real part of the permittivity of surfaces. Hereby an imaging radiometer scanner has been used to measure the first three components of the Stokes vector of a scene containing various targets of interest. Those are for instance plane surfaces being tilted such that cold sky radiation is reflected towards the radiometer. It was shown experimentally that reasonable values for the permittivity of such surfaces could be extracted. However, more measurements are necessary to validate the method and to estimate possible error sources. Hence the paper will illustrate and discuss new measurement results.

elib-URL des Eintrags:https://elib.dlr.de/128796/
Dokumentart:Konferenzbeitrag (Vortrag)
Titel:Measurement results from stand-off sensing of material characteristics by polarimetric MMW radiometry
Autoren:
AutorenInstitution oder E-Mail-AdresseAutoren-ORCID-iDORCID Put Code
Dill, StephanStephan.Dill (at) dlr.dehttps://orcid.org/0000-0001-6048-1107NICHT SPEZIFIZIERT
Peichl, MarkusMarkus.Peichl (at) dlr.dehttps://orcid.org/0000-0003-0226-9786NICHT SPEZIFIZIERT
Datum:24 Oktober 2019
Erschienen in:Proceedings of SPIE
Referierte Publikation:Ja
Open Access:Nein
Gold Open Access:Nein
In SCOPUS:Nein
In ISI Web of Science:Ja
Band:11164
DOI:10.1117/12.2534030
Seitenbereich:403-1-403-7
Name der Reihe:Proc. of SPIE
Status:veröffentlicht
Stichwörter:Polarimetry, radiometry, dielectric material, stand-off, MMW
Veranstaltungstitel:SPIE Security + Defence 2019
Veranstaltungsort:Strasbourg, Frankreich
Veranstaltungsart:internationale Konferenz
Veranstaltungsbeginn:9 September 2019
Veranstaltungsende:12 September 2019
Veranstalter :SPIE
HGF - Forschungsbereich:Luftfahrt, Raumfahrt und Verkehr
HGF - Programm:Raumfahrt
HGF - Programmthema:Erdbeobachtung
DLR - Schwerpunkt:Raumfahrt
DLR - Forschungsgebiet:R EO - Erdbeobachtung
DLR - Teilgebiet (Projekt, Vorhaben):R - Sicherheitsrelevante Erdbeobachtung
Standort: Oberpfaffenhofen
Institute & Einrichtungen:Institut für Hochfrequenztechnik und Radarsysteme > Aufklärung und Sicherheit
Hinterlegt von: Dill, Stephan
Hinterlegt am:19 Aug 2019 08:44
Letzte Änderung:24 Apr 2024 20:32

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