NDLI: Geocoding for classification of ERS/JERS-1 SAR composites

Content Provider	IEEE Xplore Digital Library
Author	Kellndorfer, J.M. Dobson, M.C. Ulaby, F.T.
Copyright Year	1996
Description	Author affiliation: Radiat. Lab., Michigan Univ., Ann Arbor, MI, USA (Kellndorfer, J.M.; Dobson, M.C.; Ulaby, F.T.)
Abstract	Using combined SAR image data acquired by the Japanese JERS-1 (L-band, hh-polarization) and the European ERS-1 (C-band, vv-polarization) yields excellent classification results. An important preprocessing step prior to classification is the geometric and radiometric calibration of the image data from each instrument. In order to match and radiometrically calibrate JERS-1 and ERS-1 radar images the geocoding of the scenes using terrain height information is indispensible. Therefore the generation of digital elevation models (DEM) and vector/point data for the search of ground control points is necessary. An invaluable data resource is made available on-line on the Internet through the US Geological Survey (USGS). Using DEM data, the sensor/target geometries are analyzed to derive the local incidence angle and determine layover and shadow regions from the DEM data. Layover and shadow regions need to be determined for both JERS-1 and ERS-1 scenes, and than excluded from the classification procedure. The radiometric information in both scenes needs to be calibrated using area correction terms derived from the local angle of incidence. This paper discusses the generation of DEM's from USGS data the generation of layover/shadow mask and local incidence angle maps, as well as the radiometric correction for ERS-1/JERS-1 SAR data at the University of Michigan.
Starting Page	2335
Ending Page	2337
File Size	527832
Page Count	3
File Format	PDF
ISBN	0780330684
DOI	10.1109/IGARSS.1996.516979
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1996-05-31
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Radiometry Layout L-band Calibration Instruments Radar imaging Digital elevation models Internet Geology Geometry
Content Type	Text
Resource Type	Article

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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