Performance Measurements on Active Cold Loads for Radiometer Calibration

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Abstract

Two semi-conductor Active Cold Loads (ACLs) to be used as cold references in spaceborne microwave radiometers have been developed. An X-band frequency has been chosen, and the target noise temperature value is in the 50 to 100 K range. The ACLs are to be characterized in the operating temperature range 0-50 degrees C, and long term stability must be assessed. To this end a Test Bed has been developed. This Test Bed is actually a stable radiometer, and its design and development is discussed. The test setup is described, and preliminary test campaign results indicate output temperatures of 73 K and 51 K for the two ACLs. The temperature sensitivity is slightly below 0.4 K/degrees C for the units, and excellent stability seems to prevail.
Original languageEnglish
Title of host publicationIGARSS: 2007 IEEE INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM : SENSING AND UNDERSTANDING OUR PLANET
PublisherIEEE
Publication date2007
Pages2431-2434
ISBN (Print)978-1-4244-1211-2
DOIs
Publication statusPublished - 2007
Event2007 IEEE International Geoscience and Remote Sensing Symposium - Barcelona, Spain
Duration: 23 Jul 200728 Jul 2007
http://ieeexplore.ieee.org/xpl/mostRecentIssue.jsp?punumber=4422707

Conference

Conference2007 IEEE International Geoscience and Remote Sensing Symposium
CountrySpain
CityBarcelona
Period23/07/200728/07/2007
Internet address

Bibliographical note

Copyright: 2007 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE

Cite this

Skou, N., Søbjærg, S. S., & Balling, J. E. (2007). Performance Measurements on Active Cold Loads for Radiometer Calibration. In IGARSS: 2007 IEEE INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM: SENSING AND UNDERSTANDING OUR PLANET (pp. 2431-2434). IEEE. https://doi.org/10.1109/IGARSS.2007.4423333
Skou, Niels ; Søbjærg, Sten Schmidl ; Balling, Jan E. / Performance Measurements on Active Cold Loads for Radiometer Calibration. IGARSS: 2007 IEEE INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM: SENSING AND UNDERSTANDING OUR PLANET. IEEE, 2007. pp. 2431-2434
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Skou, N, Søbjærg, SS & Balling, JE 2007, Performance Measurements on Active Cold Loads for Radiometer Calibration. in IGARSS: 2007 IEEE INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM: SENSING AND UNDERSTANDING OUR PLANET. IEEE, pp. 2431-2434, 2007 IEEE International Geoscience and Remote Sensing Symposium, Barcelona, Spain, 23/07/2007. https://doi.org/10.1109/IGARSS.2007.4423333

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

IGARSS: 2007 IEEE INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM: SENSING AND UNDERSTANDING OUR PLANET. IEEE, 2007. p. 2431-2434.

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review

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N2 - Two semi-conductor Active Cold Loads (ACLs) to be used as cold references in spaceborne microwave radiometers have been developed. An X-band frequency has been chosen, and the target noise temperature value is in the 50 to 100 K range. The ACLs are to be characterized in the operating temperature range 0-50 degrees C, and long term stability must be assessed. To this end a Test Bed has been developed. This Test Bed is actually a stable radiometer, and its design and development is discussed. The test setup is described, and preliminary test campaign results indicate output temperatures of 73 K and 51 K for the two ACLs. The temperature sensitivity is slightly below 0.4 K/degrees C for the units, and excellent stability seems to prevail.

AB - Two semi-conductor Active Cold Loads (ACLs) to be used as cold references in spaceborne microwave radiometers have been developed. An X-band frequency has been chosen, and the target noise temperature value is in the 50 to 100 K range. The ACLs are to be characterized in the operating temperature range 0-50 degrees C, and long term stability must be assessed. To this end a Test Bed has been developed. This Test Bed is actually a stable radiometer, and its design and development is discussed. The test setup is described, and preliminary test campaign results indicate output temperatures of 73 K and 51 K for the two ACLs. The temperature sensitivity is slightly below 0.4 K/degrees C for the units, and excellent stability seems to prevail.

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Skou N, Søbjærg SS, Balling JE. Performance Measurements on Active Cold Loads for Radiometer Calibration. In IGARSS: 2007 IEEE INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM: SENSING AND UNDERSTANDING OUR PLANET. IEEE. 2007. p. 2431-2434 https://doi.org/10.1109/IGARSS.2007.4423333