New improved algorithm for sky calibration of L-band radiometers JLBARA and ELBARA II

Handle URI:
http://hdl.handle.net/10754/564526
Title:
New improved algorithm for sky calibration of L-band radiometers JLBARA and ELBARA II
Authors:
Dimitrov, Marin; Kostov, K. G.; Jonard, François; Jadoon, Khan; Schwank, Mike; Weihermüller, Lutz; Hermes, Normen; Vanderborght, Jan P.; Vereecken, Harry
Abstract:
We propose a new algorithm for sky calibration of the L-band radiometers JLBARA and ELBARA II, introducing the effective transmissivities of the instruments. The suggested approach was tested using experimental data obtained at the Selhausen test site, Germany. It was shown that for JLBARA the effective transmissivities depend strongly on the air temperature and decrease with increasing air temperature, while for ELBARA II such strong dependence was not observed. It was also shown that the effective transmissivities account for the antenna and feed cable loss effects, and for the variations of the radiometer gain due to air temperature changes. The new calibration algorithm reduces significantly the bias of brightness temperature estimates for both radiometers, especially for JLBARA. © 2012 IEEE.
KAUST Department:
Water Desalination and Reuse Research Center (WDRC); Water Desalination and Reuse Research Center
Publisher:
Institute of Electrical and Electronics Engineers (IEEE)
Journal:
2012 12th Specialist Meeting on Microwave Radiometry and Remote Sensing of the Environment (MicroRad)
Conference/Event name:
2012 12th Specialist Meeting on Microwave Radiometry and Remote Sensing of the Environment, MicroRad 2012
Issue Date:
Mar-2012
DOI:
10.1109/MicroRad.2012.6185259
Type:
Conference Paper
ISBN:
9781467314701
Appears in Collections:
Conference Papers; Water Desalination and Reuse Research Center (WDRC)

Full metadata record

DC FieldValue Language
dc.contributor.authorDimitrov, Marinen
dc.contributor.authorKostov, K. G.en
dc.contributor.authorJonard, Françoisen
dc.contributor.authorJadoon, Khanen
dc.contributor.authorSchwank, Mikeen
dc.contributor.authorWeihermüller, Lutzen
dc.contributor.authorHermes, Normenen
dc.contributor.authorVanderborght, Jan P.en
dc.contributor.authorVereecken, Harryen
dc.date.accessioned2015-08-04T07:03:15Zen
dc.date.available2015-08-04T07:03:15Zen
dc.date.issued2012-03en
dc.identifier.isbn9781467314701en
dc.identifier.doi10.1109/MicroRad.2012.6185259en
dc.identifier.urihttp://hdl.handle.net/10754/564526en
dc.description.abstractWe propose a new algorithm for sky calibration of the L-band radiometers JLBARA and ELBARA II, introducing the effective transmissivities of the instruments. The suggested approach was tested using experimental data obtained at the Selhausen test site, Germany. It was shown that for JLBARA the effective transmissivities depend strongly on the air temperature and decrease with increasing air temperature, while for ELBARA II such strong dependence was not observed. It was also shown that the effective transmissivities account for the antenna and feed cable loss effects, and for the variations of the radiometer gain due to air temperature changes. The new calibration algorithm reduces significantly the bias of brightness temperature estimates for both radiometers, especially for JLBARA. © 2012 IEEE.en
dc.publisherInstitute of Electrical and Electronics Engineers (IEEE)en
dc.subjectCalibrationen
dc.subjectmicrowave radiometeren
dc.subjectsky emissionen
dc.titleNew improved algorithm for sky calibration of L-band radiometers JLBARA and ELBARA IIen
dc.typeConference Paperen
dc.contributor.departmentWater Desalination and Reuse Research Center (WDRC)en
dc.contributor.departmentWater Desalination and Reuse Research Centeren
dc.identifier.journal2012 12th Specialist Meeting on Microwave Radiometry and Remote Sensing of the Environment (MicroRad)en
dc.conference.date5 March 2012 through 9 March 2012en
dc.conference.name2012 12th Specialist Meeting on Microwave Radiometry and Remote Sensing of the Environment, MicroRad 2012en
dc.conference.locationRomeen
dc.contributor.institutionResearch Centre Jülich, Institute of Bio- and Geosciences: Agrosphere (IBG 3), 52425 Jülich, Germanyen
dc.contributor.institutionBulgarian Academy of Sciences, Institute of Electronics, 1784 Sofia, Bulgariaen
dc.contributor.institutionGerman Research Centre for Geosciences, 14473 Potsdam, Germanyen
kaust.authorJadoon, Khanen
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