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 |
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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 | |
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 |
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Country | Spain |
City | Barcelona |
Period | 23/07/2007 → 28/07/2007 |
Internet address |