NDLI: Calibration accuracy enhancement in the field experiment with a ground-based scatterometer

Content Provider	IEEE Xplore Digital Library
Author	Ji-Hwan Hwang Seong-Min Park Yisok Oh
Copyright Year	2010
Description	Author affiliation: School of Electronic and Electrical Engineering, Hongik University, Seoul, Korea (Yisok Oh) \|\| Department of Electronic Information and Communication Engineering, Hongik University, Seoul, Korea (Ji-Hwan Hwang; Seong-Min Park)
Abstract	An improved field-measurement technique for enhancing the calibration accuracy of a ground-based scatterometer is proposed in this paper. The automatic two-dimensional (2-D) measurement of a calibration target, so-called ‘2-D target scanning technique (2DTST)’, gives a precise alignment between a point calibration target and an antenna bore-sight. Averaging of the calibration-target measurements increases further the accuracy and reliability of the automatic alignment. The measurement results show that the correlation among the measurements is larger than 0.95 and the error-rate is below 5% at a frequency range from 9.4 GHz to 9.9 GHz. The evaluation of the calibration accuracy using the STCT (Single Target Calibration Technique) shows that 2DTST in the field experiment can secure the precise calibration accuracy within 0.5 dB for magnitude correction and 4° for phase correction.
Starting Page	1100
Ending Page	1103
File Size	273055
Page Count	4
File Format	PDF
ISBN	9781424495658
ISSN	21537003
e-ISBN	9781424495665
e-ISBN	9781424495641
DOI	10.1109/IGARSS.2010.5649865
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2010-07-25
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Calibration Accuracy Antenna measurements Radar measurements Reliability Frequency measurement Correlation Single Target Calibration Technique (STCT) Ground-based scatterometer calibration HPS (Hongik Polarimetric Scatterometer) 2-D target scanning technique (2DTST)
Content Type	Text
Resource Type	Article

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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