DocumentCode
2153457
Title
Errors due to the reflectivity of calibration targets
Author
Randa, J. ; Walker, D.K. ; Cox, A.E. ; Billinger, R.L.
Author_Institution
Div. of Electromagn., Nat. Inst. of Stand. & Technol., Boulder, CO
Volume
3
fYear
2004
fDate
20-24 Sept. 2004
Firstpage
1715
Abstract
For a microwave total-power radiometer, we consider the error introduced by neglecting the difference in the antenna reflection coefficient between when it views a distant scene and when it views a nearby calibration target. An approximate expression is presented for the error, and measurement results are presented that enable one to estimate the resulting uncertainty in the measured brightness temperature. This uncertainty ranges from about 0.1 K to several kelvins for the representative cases considered
Keywords
calibration; error analysis; radiometry; remote sensing by radar; antenna reflection coefficient; brightness temperature; calibration target reflectivity; error approximation; microwave total-power radiometer; remote sensing by radar; Antenna measurements; Calibration; Layout; Measurement uncertainty; Microwave antennas; Microwave radiometry; Reflection; Reflectivity; Reflector antennas; Temperature measurement;
fLanguage
English
Publisher
ieee
Conference_Titel
Geoscience and Remote Sensing Symposium, 2004. IGARSS '04. Proceedings. 2004 IEEE International
Conference_Location
Anchorage, AK
Print_ISBN
0-7803-8742-2
Type
conf
DOI
10.1109/IGARSS.2004.1370662
Filename
1370662
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