NDLI: Multi-baseline InSAR phase unwrapping method based on mixed-integer optimisation model

Content Provider	IET Digital Library
Author	Jin, Biao Guo, Jiao Wei, Pengliang Su, Baofeng He, Dongjian
Abstract	Multi-baseline phase unwrapping operation is a very important step for multi-baseline Synthetic Aperture Radar Interferometry (InSAR). However, the conventional methods applied for single pixel suffer seriously from the phase noise that exists numerously in the interferometric phase images (i.e. interferograms). In order to improve the robustness to noise, this study proposes an innovative multi-baseline InSAR phase unwrapping method based on a mixed-integer optimisation model. The proposed method combines the central and its neighbouring pixels to jointly construct the mixed-integer optimisation model under the assumption that the pixels within a local window can be approximated by a small slant plane terrain. Furthermore, considering the practical case, the optimal window size is estimated according to the deviation from the interferometric wrapped phase to the assumed linear terrain, and the fast Fourier transform technique is adopted to reduce computational cost. The theoretical analysis and computer simulation demonstrate that the proposed method is able to improve the multi-baseline phase unwrapping performance and can be applied to reconstruct the digital elevation models for complicated topographies.
Starting Page	694
Ending Page	701
Page Count	8
ISSN	17518784
Volume Number	12
e-ISSN	17518792
Issue Number	Issue 7, Jul (2018)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-rsn/12/7
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-rsn.2017.0543
Journal	IET Radar, Sonar & Navigation
Publisher Date	2018-03-15
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Computational Cost Reduction Digital Elevation Model Fast Fourier Transform Fast Fourier Transform Technique Innovative Multibaseline InSAR Phase Unwrapping Method Integer Programming Integral Transforms Interferometric Phase Imaging Mixed-integer Optimisation Model Optical, Image And Video Signal Processing Optimal Window Size Estimation Optimisation Technique Phase Noise Radar Equipment Radar Imaging Radar Interferometry Small Slant Plane Terrain Synthetic Aperture Radar Synthetic Aperture Radar Interferometry System And Application
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

Sl.	Authority	Responsibilities	Communication Details
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
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

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