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A W-Band Radiometer with the Offset Parabolic Antenna for Radiometric Measurements
Joint Authors
Wu, Li
Peng, Shu-sheng
Xu, Jian-zhong
Xiao, Ze-long
Source
International Journal of Antennas and Propagation
Issue
Vol. 2016, Issue 2016 (31 Dec. 2016), pp.1-9, 9 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2016-01-21
Country of Publication
Egypt
No. of Pages
9
Main Subjects
Abstract EN
This paper deals with the development of a W-band noise-adding radiometer which combines the millimeter-wave (MMW) radiometric measurements with a high-resolution imager.
The offset parabolic antenna is presented to achieve an accurate measurement and a high resolution.
To reduce the cross-polarization level of the antenna, a multimode feed horn with a multistep structure is proposed to match the focal region fields of the reflector.
It has advantages over the corrugated horns in lower mass and easier manufacturing.
In addition, due to an unavoidable settling time for the noise-adding radiometer output signal passing through the low-pass filter, a theoretical criterion for the optimum duty cycle determination to reject extraneous contributions from the transient is proposed in this paper.
The appropriate duty cycle threshold is 0.33 for the developed W-band radiometer.
Also, a geometric correction method is presented to correct the obtained passive image suffering from a distortion for a better image interpretation.
Preliminary experimental results are given to illustrate and verify the presented techniques.
American Psychological Association (APA)
Wu, Li& Peng, Shu-sheng& Xu, Jian-zhong& Xiao, Ze-long. 2016. A W-Band Radiometer with the Offset Parabolic Antenna for Radiometric Measurements. International Journal of Antennas and Propagation،Vol. 2016, no. 2016, pp.1-9.
https://search.emarefa.net/detail/BIM-1105151
Modern Language Association (MLA)
Wu, Li…[et al.]. A W-Band Radiometer with the Offset Parabolic Antenna for Radiometric Measurements. International Journal of Antennas and Propagation No. 2016 (2016), pp.1-9.
https://search.emarefa.net/detail/BIM-1105151
American Medical Association (AMA)
Wu, Li& Peng, Shu-sheng& Xu, Jian-zhong& Xiao, Ze-long. A W-Band Radiometer with the Offset Parabolic Antenna for Radiometric Measurements. International Journal of Antennas and Propagation. 2016. Vol. 2016, no. 2016, pp.1-9.
https://search.emarefa.net/detail/BIM-1105151
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1105151