Measurements on Active Cold Loads for Radiometer Calibration

Publication: Research - peer-reviewJournal article – Annual report year: 2009

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Measurements on Active Cold Loads for Radiometer Calibration. / Søbjærg, Sten Schmidl; Skou, Niels; Balling, Jan E.

In: I E E E Transactions on Geoscience and Remote Sensing, Vol. 47, No. 9, 2009, p. 3134-3139.

Publication: Research - peer-reviewJournal article – Annual report year: 2009

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Author

Søbjærg, Sten Schmidl; Skou, Niels; Balling, Jan E. / Measurements on Active Cold Loads for Radiometer Calibration.

In: I E E E Transactions on Geoscience and Remote Sensing, Vol. 47, No. 9, 2009, p. 3134-3139.

Publication: Research - peer-reviewJournal article – Annual report year: 2009

Bibtex

@article{cc01a95306414cbbaac80b4b6c4818f4,
title = "Measurements on Active Cold Loads for Radiometer Calibration",
publisher = "I E E E",
author = "Søbjærg, {Sten Schmidl} and Niels Skou and Balling, {Jan E.}",
year = "2009",
doi = "10.1109/TGRS.2009.2017015",
volume = "47",
number = "9",
pages = "3134--3139",
journal = "I E E E Transactions on Geoscience and Remote Sensing",
issn = "0196-2892",

}

RIS

TY - JOUR

T1 - Measurements on Active Cold Loads for Radiometer Calibration

A1 - Søbjærg,Sten Schmidl

A1 - Skou,Niels

A1 - Balling,Jan E.

AU - Søbjærg,Sten Schmidl

AU - Skou,Niels

AU - Balling,Jan E.

PB - I E E E

PY - 2009

Y1 - 2009

N2 - Two semiconductor active cold loads (ACLs) to be used as cold references in spaceborne microwave radiometers have been developed. An X-band frequency was chosen, and the target noise temperature value was in the 50-100-K range. The ACLs are characterized in the operating temperature range of 0degC-50degC, and long-term stability is assessed. To this end, a test bed has been developed. This test bed is actually a stable radiometer, and its design and performance are discussed. The test setup is described, and test campaign results indicate output temperatures of 77 and 56 K for the two ACLs. The temperature sensitivity is slightly below 0.4 K/degC for the units, and long-term stability within 2 K/year is observed.

AB - Two semiconductor active cold loads (ACLs) to be used as cold references in spaceborne microwave radiometers have been developed. An X-band frequency was chosen, and the target noise temperature value was in the 50-100-K range. The ACLs are characterized in the operating temperature range of 0degC-50degC, and long-term stability is assessed. To this end, a test bed has been developed. This test bed is actually a stable radiometer, and its design and performance are discussed. The test setup is described, and test campaign results indicate output temperatures of 77 and 56 K for the two ACLs. The temperature sensitivity is slightly below 0.4 K/degC for the units, and long-term stability within 2 K/year is observed.

U2 - 10.1109/TGRS.2009.2017015

DO - 10.1109/TGRS.2009.2017015

JO - I E E E Transactions on Geoscience and Remote Sensing

JF - I E E E Transactions on Geoscience and Remote Sensing

SN - 0196-2892

IS - 9

VL - 47

SP - 3134

EP - 3139

ER -