Performance measurements on active cold loads for radiometer calibration
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 ra...
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| creator | Skou, N. Sobjaerg, S.S. Balling, J. |
| description | 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 0-50degC, 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/degC for the units, and excellent stability seems to prevail. |
| doi_str_mv | 10.1109/IGARSS.2007.4423333 |
| format | Conference Proceeding |
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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 0-50degC, 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. 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The temperature sensitivity is slightly below 0.4 K/degC for the units, and excellent stability seems to prevail.</description><subject>active cold load</subject><subject>Calibration</subject><subject>Extraterrestrial measurements</subject><subject>Frequency</subject><subject>microwave</subject><subject>Microwave radiometry</subject><subject>radiometer</subject><subject>Space cooling</subject><subject>Stability</subject><subject>System testing</subject><subject>Temperature distribution</subject><subject>Temperature measurement</subject><subject>Temperature sensors</subject><issn>2153-6996</issn><issn>2153-7003</issn><isbn>9781424412112</isbn><isbn>1424412110</isbn><isbn>1424412129</isbn><isbn>9781424412129</isbn><fulltext>true</fulltext><rsrctype>conference_proceeding</rsrctype><creationdate>2007</creationdate><recordtype>conference_proceeding</recordtype><sourceid>6IE</sourceid><sourceid>RIE</sourceid><recordid>eNo1kFtLw0AUhNcbWGt-QV_2DzSevSSbfSxF20JBsfpcTk5OYCUX2UTBf2_A-L3MwwzDMEKsFKRKgX847Davp1OqAVxqrTYTF-JOWW2t0kr7S7HQKjNrB2CuROJd8e8pfT17uff5rUiG4QMmjLce1ELsXzjWfWyxI5Yt4_AVueVuHGTfSaQxfLOkvqlk02M1yCkqI1ahb3nkKAmbUEYcQ9_di5sam4GTWZfi_enxbbtfH593h-3muA7KTCtUCahz5ywBeSTwmTZUgjWqZiwzto6tJ8eIjmpy5AunqaxQF5U1BjKzFKu_3sDM588YWow_5_kU8wvenVJG</recordid><startdate>200707</startdate><enddate>200707</enddate><creator>Skou, N.</creator><creator>Sobjaerg, S.S.</creator><creator>Balling, J.</creator><general>IEEE</general><scope>6IE</scope><scope>6IH</scope><scope>CBEJK</scope><scope>RIE</scope><scope>RIO</scope></search><sort><creationdate>200707</creationdate><title>Performance measurements on active cold loads for radiometer calibration</title><author>Skou, N. ; Sobjaerg, S.S. ; Balling, J.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-i1353-1b0a26774c0c9ac09523cb0431feab5e47e49c7eaa7cfc7c9872cbda28d433053</frbrgroupid><rsrctype>conference_proceedings</rsrctype><prefilter>conference_proceedings</prefilter><language>eng</language><creationdate>2007</creationdate><topic>active cold load</topic><topic>Calibration</topic><topic>Extraterrestrial measurements</topic><topic>Frequency</topic><topic>microwave</topic><topic>Microwave radiometry</topic><topic>radiometer</topic><topic>Space cooling</topic><topic>Stability</topic><topic>System testing</topic><topic>Temperature distribution</topic><topic>Temperature measurement</topic><topic>Temperature sensors</topic><toplevel>online_resources</toplevel><creatorcontrib>Skou, N.</creatorcontrib><creatorcontrib>Sobjaerg, S.S.</creatorcontrib><creatorcontrib>Balling, J.</creatorcontrib><collection>IEEE Electronic Library (IEL) Conference Proceedings</collection><collection>IEEE Proceedings Order Plan (POP) 1998-present by volume</collection><collection>IEEE Xplore All Conference Proceedings</collection><collection>IEEE Electronic Library (IEL)</collection><collection>IEEE Proceedings Order Plans (POP) 1998-present</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>Skou, N.</au><au>Sobjaerg, S.S.</au><au>Balling, J.</au><format>book</format><genre>proceeding</genre><ristype>CONF</ristype><atitle>Performance measurements on active cold loads for radiometer calibration</atitle><btitle>2007 IEEE International Geoscience and Remote Sensing Symposium</btitle><stitle>IGARSS</stitle><date>2007-07</date><risdate>2007</risdate><spage>2431</spage><epage>2434</epage><pages>2431-2434</pages><issn>2153-6996</issn><eissn>2153-7003</eissn><isbn>9781424412112</isbn><isbn>1424412110</isbn><eisbn>1424412129</eisbn><eisbn>9781424412129</eisbn><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 0-50degC, 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/degC for the units, and excellent stability seems to prevail.</abstract><pub>IEEE</pub><doi>10.1109/IGARSS.2007.4423333</doi><tpages>4</tpages><oa>free_for_read</oa></addata></record> |
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| ispartof | 2007 IEEE International Geoscience and Remote Sensing Symposium, 2007, p.2431-2434 |
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| language | eng |
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| source | IEEE Electronic Library (IEL) Conference Proceedings |
| subjects | active cold load Calibration Extraterrestrial measurements Frequency microwave Microwave radiometry radiometer Space cooling Stability System testing Temperature distribution Temperature measurement Temperature sensors |
| title | Performance measurements on active cold loads for radiometer calibration |
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