NDLI: Phase of Target Scattering for Wetland Characterization Using Polarimetric C-Band SAR

Content Provider	IEEE Xplore Digital Library
Author	Touzi, R. Deschamps, A. Rother, G.
Copyright Year	1980
Abstract	Wetlands continue to be under threat, and there is a major need for mapping and monitoring wetlands for better management and protection of these sensitive areas. Only a few studies have been published on wetland characterization using polarimetric synthetic aperture radars (SARs). The most successful results have been obtained using the phase difference between HH and VV polarizations, phi_HH - phi_VV, which has shown promise for separating flooded wetland classes. Recently, we have introduced a new decomposition, the Touzi decomposition, which describes target scattering type in terms of a complex entity, the symmetric scattering type. Huynen's target helicity is used to assess the symmetric nature of target scattering. In this paper, the new complex-scattering-type parameters, the magnitude alphas and phase Phi_alpha s, are investigated for wetland characterization. The use of the dominant-scattering-type phase Phi_alpha s makes it possible to discriminate shrub bogs from poor (sedge or shrub) fens. These two classes cannot be separated using phi_HH - phi_VV, or the radiometric scattering information provided by alphas, the Cloude alpha, the entropy H, and the multipolarization HH-HV-VV channels. phi_alpha s , which cannot detect deep (45 cm below the peat surface) water flow in a bog, is more sensitive to the shallower (10-20-cm) fen beneath water, and this makes possible the separation of poor fens from shrub bogs. Phi_alpha s also permits the discrimination of conifer-dominated treed bog from upland deciduous forest under leafy conditions. Target helicity information is exploited to introduce a new parameter, the target asymmetry. The latter is shown very promising for detection of forest changes between leafy and no-leaf conditions. The analysis of low-entropy marsh scattering showed that both the scattering-type magnitude and phase alphas and Phi_alpha s, respectively, as well as the maximum polarization intensity of the dominant scattering m, are needed for a better understanding of marsh complex scattering mechanisms. The unique information provided by the new roll-invariant decomposition parameters are demonstrated using repeat-pass Convair-580 polarimetric C-band SAR data collected in June and October 1995 over the RAMSAR Mer Bleue wetland site near Ottawa (Canada).
Sponsorship	IEEE Geoscience and Remote Sensing Society IEEE URSI
Starting Page	3241
Ending Page	3261
Page Count	21
File Size	7234615
File Format	PDF
ISSN	01962892
Volume Number	47
Issue Number	9
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2009-09-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Radar scattering Polarization Radar imaging Radar polarimetry Spaceborne radar Synthetic aperture radar Remote sensing Satellites Radar detection Monitoring wetland classification Bogs fens polarimetric radar polarimetry polarization radar synthetic aperture synthetic aperture imaging wetland
Content Type	Text
Resource Type	Article
Subject	Earth and Planetary Sciences 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

Scattering type phase for wetland classification using C-band polarimetric SAR

Recent Advances in POL-SAR & POL-IN-SAR Imaging of Natural Habitats and Wetland Remote Sensing

Parameters analysis for polarimetric SAR Based on classification accuracy

Recent advances in microwave multi-modal SAR remote sensing of the terrestrial covers

Model-Based Polarimetric SAR Speckle Filter

Classification using polarimetric and interferometric SAR-data

Advances in SAR Polarimetry applications exploiting polarimetric spaceborne sensors

The Compact Polarimetry Alternative for Spaceborne SAR at Low Frequency

Statistical and phenomenological recognition in polarimetric SAR imaging

Phase of Target Scattering for Wetland Characterization Using Polarimetric C-Band SAR

Similar Documents

Scattering type phase for wetland classification using C-band polarimetric SAR

Recent Advances in POL-SAR & POL-IN-SAR Imaging of Natural Habitats and Wetland Remote Sensing

Parameters analysis for polarimetric SAR Based on classification accuracy

Recent advances in microwave multi-modal SAR remote sensing of the terrestrial covers

Model-Based Polarimetric SAR Speckle Filter

Classification using polarimetric and interferometric SAR-data

Advances in SAR Polarimetry applications exploiting polarimetric spaceborne sensors

The Compact Polarimetry Alternative for Spaceborne SAR at Low Frequency

Statistical and phenomenological recognition in polarimetric SAR imaging

Phase of Target Scattering for Wetland Characterization Using Polarimetric C-Band SAR