NDLI: Error model and calibration of synthetic aperture interferometric radiometer based on visibility function

Content Provider	IEEE Xplore Digital Library
Author	Ke Chen Wei Guo Hong Yang Rong Jin Guanli Yi Fei Hu Jinhai Sun
Copyright Year	2012
Description	Author affiliation: Science and Technology on Electromagnetic Scattering Laboratory, China (Jinhai Sun) \|\| Department of Electronics and Information Engineering, Huazhong University of Science and Technology, China (Ke Chen; Wei Guo; Hong Yang; Rong Jin; Guanli Yi; Fei Hu)
Abstract	Traditionally, the system errors of synthetic aperture interferometric radiometers (SAIRs) are analyzed and classified by the causes they are generated, which is easy for understanding but complicated for calibration. This paper presents a new error model based on the visibility function to analyze the system errors of SAIRs. In this model the system errors are classified by their effects on the ideal visibility function, which is simple for calibration. Firstly, the error model based on the visibility function is proposed, in which the errors according to their effects on the ideal visibility function are grouped in: ①the orientation-independent multiplicative error, Ɇthe orientation-dependent multiplicative error, and ③the additive error. Then, the two overall calibration methods respectively using external reference source and external reference scene are proposed. Finally, the preliminary calibration experiment results on the 8mm-band HUST-SAIR prototype show the validity of the error model and the overall calibration methods. The study in this paper provides a means to reduce the complexity of calibration routine of SAIRs and to improve the imaging performance of SAIRs.
Starting Page	4633
Ending Page	4636
File Size	182789
Page Count	4
File Format	PDF
ISBN	9781467311601
ISSN	21536996
e-ISBN	9781467311595
e-ISBN	9781467311588
DOI	10.1109/IGARSS.2012.6350433
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2012-07-22
Publisher Place	Germany
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Calibration Additives Mathematical model Brightness temperature Noise Microwave radiometry Equations calibration synthetic aperture interferometric radiometer system errors model
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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