Houtz, D.
, Gu, D.
, Walker, D.
and Randa, J.
(2012),
An Investigation of Antenna Characterization Techniques in Microwave Remote Sensing Calibrations, 2012 IEEE International Geoscience and Remote Sensing Symposium, Munich, -1, [online], https://doi.org/10.1109/IGARSS.2012.6350426
(Accessed September 16, 2024)
Official websites use .gov
A .gov website belongs to an official government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.
An Investigation of Antenna Characterization Techniques in Microwave Remote Sensing Calibrations
Published
Author(s)
, , ,
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 distancesConference Dates
July 22-27, 2012
Conference Location
Munich
Conference Title
2012 IEEE International Geoscience and Remote Sensing Symposium
Pub Type
Conferences
Download Paper
Keywords
Blackbody target, mcirowave radiometer, illuminatin efficiency, antenna pattern simulation
Citation
Issues
If you have any questions about this publication or are having problems accessing it, please contact reflib@nist.gov.
Created July 22, 2012, Updated January 27, 2020