Performance Measurements on Active Cold Loads for Radiometer Calibration

Niels Skou; Sten Schmidl Søbjærg; Jan E. Balling

doi:10.1109/IGARSS.2007.4423333

Performance Measurements on Active Cold Loads for Radiometer Calibration

Niels Skou, Sten Schmidl Søbjærg, Jan E. Balling

Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research › peer-review

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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 language	English
Title of host publication	IGARSS: 2007 IEEE INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM : SENSING AND UNDERSTANDING OUR PLANET
Publisher	IEEE
Publication date	2007
Pages	2431-2434
ISBN (Print)	978-1-4244-1211-2
DOIs	https://doi.org/10.1109/IGARSS.2007.4423333
Publication status	Published - 2007
Event	2007 IEEE International Geoscience and Remote Sensing Symposium - Barcelona, Spain Duration: 23 Jul 2007 → 28 Jul 2007 http://ieeexplore.ieee.org/xpl/mostRecentIssue.jsp?punumber=4422707

Conference

Conference	2007 IEEE International Geoscience and Remote Sensing Symposium
Country	Spain
City	Barcelona
Period	23/07/2007 → 28/07/2007
Internet address	http://ieeexplore.ieee.org/xpl/mostRecentIssue.jsp?punumber=4422707

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

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@inproceedings{a618bc8f167b43f18087b6a28dd00450,

title = "Performance Measurements on Active Cold Loads for Radiometer Calibration",

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.",

author = "Niels Skou and S{\o}bj{\ae}rg, {Sten Schmidl} and Balling, {Jan E.}",

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; 2007 IEEE International Geoscience and Remote Sensing Symposium, IGARSS'07 ; Conference date: 23-07-2007 Through 28-07-2007",

year = "2007",

doi = "10.1109/IGARSS.2007.4423333",

language = "English",

isbn = "978-1-4244-1211-2",

pages = "2431--2434",

booktitle = "IGARSS: 2007 IEEE INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM",

publisher = "IEEE",

address = "United States",

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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 proceeding › Article in proceedings › Research › peer-review

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N1 - 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

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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.

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