NDLI: A two-dimensional production system for grouping persistent scatterers in urban high-resolution SAR scenes

Content Provider	IEEE Xplore Digital Library
Author	Schack, L. Schunert, A. Soergel, U.
Copyright Year	2012
Description	Author affiliation: Institute of Photogrammetry and GeoInformation, Leibniz Universität Hannover, Germany (Schack, L.; Schunert, A.; Soergel, U.)
Abstract	Modern spaceborne SAR sensors like TerraSAR-X offer ground resolutions of about one meter in range and azimuth direction which allows for the discrimination between different facade elements. Those objects often feature a trihedral structure, which leads to a strong radar response due to triple-bounce reflection. The resulting radar signal is frequently observed to be temporally stable and usually shows a large amplitude (Persistent Scatterer, PS). Our aim is to aggregate single PS to lattices using Gestalt theory. This is a very important step in the process of unveiling the physical nature of PS since it simplifies the fusion with supplementary data like oblique view aerial images. We use a two stage 2D production system which exploits the knowledge abut mapping of 3D objects into the SAR imaging geometry. In the first step, the production system groups those PS, which are vertically aligned in the real world, to rows. In a second step, those groups are merged to regular lattices with the second orientation corresponding to the horizontal alignment of facade elements. The results show the benefit of aggregating points to lattices by the possible distinction of facade orientations.
Starting Page	1
Ending Page	4
File Size	821360
Page Count	4
File Format	PDF
ISBN	9781467349604
e-ISBN	9781467349628
DOI	10.1109/PPRS.2012.6398311
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2012-11-11
Publisher Place	Japan
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Geometry Production systems Spaceborne radar Lattices Radar polarimetry Sensors Synthetic aperture radar
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
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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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