Challenges in application of Active Cold Loads for microwave radiometer calibration
Two Active Cold Loads (ACLs) for microwave radiometer calibration, operating at X-band, are evaluated with respect to important stability parameters. Using a stable radiometer system as test bed, absolute levels of 77 K and 55 K are found. This paper identifies and summarizes potential challenges an...
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| creator | Sobjaerg, S. S. Balling, J. E. Skou, N. |
| description | Two Active Cold Loads (ACLs) for microwave radiometer calibration, operating at X-band, are evaluated with respect to important stability parameters. Using a stable radiometer system as test bed, absolute levels of 77 K and 55 K are found. This paper identifies and summarizes potential challenges and uncertainties in future application of ACLs in air and space borne missions, and important parameters, such as temperature sensitivity and long term stability are addressed. For the devices under test, temperature sensitivities are found to be in the range from 0.2 K/°C to 0.4 K/°C, and typical long term drift up to 1.5 K/year is estimated. |
| doi_str_mv | 10.1109/MicroRad.2012.6185258 |
| format | Conference Proceeding |
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For the devices under test, temperature sensitivities are found to be in the range from 0.2 K/°C to 0.4 K/°C, and typical long term drift up to 1.5 K/year is estimated.</description><identifier>ISBN: 9781467314688</identifier><identifier>ISBN: 1467314684</identifier><identifier>EISBN: 1467314692</identifier><identifier>EISBN: 9781467314695</identifier><identifier>EISBN: 9781467314701</identifier><identifier>EISBN: 1467314706</identifier><identifier>DOI: 10.1109/MicroRad.2012.6185258</identifier><language>eng</language><publisher>IEEE</publisher><subject>Active cold load ; Calibration ; radiometer ; Radiometry ; Switches ; Temperature measurement ; Temperature sensors ; Thermal stability</subject><ispartof>2012 12th Specialist Meeting on Microwave Radiometry and Remote Sensing of the Environment (MicroRad), 2012, p.1-4</ispartof><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://ieeexplore.ieee.org/document/6185258$$EHTML$$P50$$Gieee$$H</linktohtml><link.rule.ids>309,310,780,784,789,790,2058,27925,54920</link.rule.ids><linktorsrc>$$Uhttps://ieeexplore.ieee.org/document/6185258$$EView_record_in_IEEE$$FView_record_in_$$GIEEE</linktorsrc></links><search><creatorcontrib>Sobjaerg, S. S.</creatorcontrib><creatorcontrib>Balling, J. E.</creatorcontrib><creatorcontrib>Skou, N.</creatorcontrib><title>Challenges in application of Active Cold Loads for microwave radiometer calibration</title><title>2012 12th Specialist Meeting on Microwave Radiometry and Remote Sensing of the Environment (MicroRad)</title><addtitle>MicroRad</addtitle><description>Two Active Cold Loads (ACLs) for microwave radiometer calibration, operating at X-band, are evaluated with respect to important stability parameters. Using a stable radiometer system as test bed, absolute levels of 77 K and 55 K are found. This paper identifies and summarizes potential challenges and uncertainties in future application of ACLs in air and space borne missions, and important parameters, such as temperature sensitivity and long term stability are addressed. For the devices under test, temperature sensitivities are found to be in the range from 0.2 K/°C to 0.4 K/°C, and typical long term drift up to 1.5 K/year is estimated.</description><subject>Active cold load</subject><subject>Calibration</subject><subject>radiometer</subject><subject>Radiometry</subject><subject>Switches</subject><subject>Temperature measurement</subject><subject>Temperature sensors</subject><subject>Thermal stability</subject><isbn>9781467314688</isbn><isbn>1467314684</isbn><isbn>1467314692</isbn><isbn>9781467314695</isbn><isbn>9781467314701</isbn><isbn>1467314706</isbn><fulltext>true</fulltext><rsrctype>conference_proceeding</rsrctype><creationdate>2012</creationdate><recordtype>conference_proceeding</recordtype><sourceid>6IE</sourceid><sourceid>RIE</sourceid><recordid>eNo1UNtKxDAUjIigrv0CEfIDrbmYNnlcirpCRdB9X07SE42kTUmL4t-76joPMwzDOQNDyBVnFefMXD8Gl9Mz9JVgXFQ110oofUTO-U3dyD0ZcUwK0-h_r_UpKeb5ne3RMKmMPiMv7RvEiOMrzjSMFKYpBgdLSCNNnq7dEj6Qtin2tEvQz9SnTIef3k_YBxn6kAZcMFMHMdj8e3lBTjzEGYuDrsj27nbbbsru6f6hXXdlMGwpvba2RsEYRyuYqpm0minmAaxTogHhORqrUNTcWSkBeCOdN046zZUVIFfk8u9tQMTdlMMA-Wt3mEF-A3irU5g</recordid><startdate>201203</startdate><enddate>201203</enddate><creator>Sobjaerg, S. 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S.</creatorcontrib><creatorcontrib>Balling, J. E.</creatorcontrib><creatorcontrib>Skou, N.</creatorcontrib><collection>IEEE Electronic Library (IEL) Conference Proceedings</collection><collection>IEEE Proceedings Order Plan All Online (POP All Online) 1998-present by volume</collection><collection>IEEE Xplore All Conference Proceedings</collection><collection>IEEE Electronic Library (IEL)</collection><collection>IEEE Proceedings Order Plans (POP All) 1998-Present</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>Sobjaerg, S. S.</au><au>Balling, J. E.</au><au>Skou, N.</au><format>book</format><genre>proceeding</genre><ristype>CONF</ristype><atitle>Challenges in application of Active Cold Loads for microwave radiometer calibration</atitle><btitle>2012 12th Specialist Meeting on Microwave Radiometry and Remote Sensing of the Environment (MicroRad)</btitle><stitle>MicroRad</stitle><date>2012-03</date><risdate>2012</risdate><spage>1</spage><epage>4</epage><pages>1-4</pages><isbn>9781467314688</isbn><isbn>1467314684</isbn><eisbn>1467314692</eisbn><eisbn>9781467314695</eisbn><eisbn>9781467314701</eisbn><eisbn>1467314706</eisbn><abstract>Two Active Cold Loads (ACLs) for microwave radiometer calibration, operating at X-band, are evaluated with respect to important stability parameters. Using a stable radiometer system as test bed, absolute levels of 77 K and 55 K are found. This paper identifies and summarizes potential challenges and uncertainties in future application of ACLs in air and space borne missions, and important parameters, such as temperature sensitivity and long term stability are addressed. For the devices under test, temperature sensitivities are found to be in the range from 0.2 K/°C to 0.4 K/°C, and typical long term drift up to 1.5 K/year is estimated.</abstract><pub>IEEE</pub><doi>10.1109/MicroRad.2012.6185258</doi><tpages>4</tpages></addata></record> |
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| identifier | ISBN: 9781467314688 |
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| language | eng |
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| source | IEEE Electronic Library (IEL) Conference Proceedings |
| subjects | Active cold load Calibration radiometer Radiometry Switches Temperature measurement Temperature sensors Thermal stability |
| title | Challenges in application of Active Cold Loads for microwave radiometer calibration |
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