NDLI: Refined filtering of interferometric phase from INSAR data

Content Provider	IEEE Xplore Digital Library
Author	Chin-Fu Chao Kun-Shan Chen Jong-Sen Lee Chih-Tien Wang
Copyright Year	2012
Description	Author affiliation: Institute of Space science, National Central University, Taiwan (Chin-Fu Chao; Kun-Shan Chen) \|\| Center for Space and Remote Sensing Research, National Central University, Taiwan (Jong-Sen Lee; Chih-Tien Wang)
Abstract	Radar interferometry has been widely applied in measuring the surface height. The information about surface can be derived from phase interferograms. However, phase noise reduces the accuracy and reliability of that information. Hence, the minimization of phase noise is essential to the retrieval of surface information. This work presents a refined filter that is based on the Lee adaptive INSAR filter and the sigma filter. The basic idea is to filter adaptively the interferometric phase according to the local noise level to minimize the loss of signal for a particular shape of fringes, including in such extreme cases as involve broken fringes, following the elimination of unreliable pixels of phase noise. The goal is to reduce the phase deviation and the number of residues, and minimize the phase error. The proposed filter was inspected herein using both simulated data and real interferometer data. Results reveal that the filtering performance is better than that of commonly used filters.
Starting Page	1821
Ending Page	1824
File Size	1281447
Page Count	4
File Format	PDF
ISBN	9781467311601
ISSN	21536996
e-ISBN	9781467311595
e-ISBN	9781467311588
DOI	10.1109/IGARSS.2012.6351157
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	Filtering algorithms Phase noise Information filters Synthetic aperture radar interferometry refined filter INSAR filter phase noise filtering
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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