Houtz, D.
(2012),
An Investigation of Antenna Characterization Techniques in Microwave Remote Sensing Calibration, 2012 IEEE International Geoscience and Remote Sensing Symposium, Munich, -1, [online], https://doi.org/10.1109/IGARSS.2012.6350426
(Accessed April 2, 2025)
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An Investigation of Antenna Characterization Techniques in Microwave Remote Sensing Calibration
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Abstract
We compare three methods of quantifying illumination efficiency (IE). The ratio IE describes the contribution of energy emitted from a blackbody target to the total energy measured at an antenna aperture in a free-space microwave calibration target radiometric measurement. Measurements are compared at three frequencies: 18 GHz, 22.5 GHz, and 26 GHz. An antenna pattern integration method is compared with a recently developed target-temperature fitting method. These two experimental approaches are also compared to a computational antenna pattern simulation. Results show that the simulation agrees with the experimental fitting method more closely at far-field distances, whereas the antenna pattern integration and experimental fitting method agree at closer distances.Conference Dates
July 22-27, 2012
Conference Location
Munich
Conference Title
2012 IEEE International Geoscience and Remote Sensing Symposium
Pub Type
Conferences
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Keywords
Antenna pattern simulation, Blackbody target, Illumination efficiency, Microwave radiometer
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Created December 31, 2012, Updated January 27, 2020