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Analysis of two Seasat synthetic aperture radar images of an urban sceneBecause the Seasat satellite is not polar-orbiting, the look-directions of its SAR radar on the basic ascending and descending orbits were neither in the same direction, orthogonal to, nor opposite to, one another. This calls for a technique by means of which to identify those features within a given geographic region which were imaged from two directions by Seasat SAR and are sensitive to radar orientation. It is demonstrated that images from the two orbits with different look directions can be registered and subtracted from one another, with the resulting difference image highlighting those features that are direction-sensitive. Although this depends on a precise registration the subtraction technique is straightforward once such registration has been obtained.
Document ID
19820041917
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Bryan, M. L.
(California Institute of Technology, Jet Propulsion Laboratory, Pasadena CA, United States)
Date Acquired
August 10, 2013
Publication Date
March 1, 1982
Publication Information
Publication: Photogrammetric Engineering and Remote Sensing
Volume: 48
Subject Category
Earth Resources And Remote Sensing
Accession Number
82A25452
Funding Number(s)
CONTRACT_GRANT: NAS7-100
Distribution Limits
Public
Copyright
Other

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