NDLI: Time-domain backprojection for precise geodetic coding of spaceborne SAR imagery

Content Provider	IEEE Xplore Digital Library
Author	Harcke, L.J.
Copyright Year	2009
Description	Author affiliation: Radar Science and Engineering Section, Jet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Dr Stop 300-319, Pasadena, 91109 USA (Harcke, L.J.)
Abstract	A new era of precise-orbit determination for space-borne SAR permits time-domain backprojection of the data for accurate geocoded image production. In this work, time-domain backprojection is applied to Level 1.0 data from the ALOS/PALSAR instrument to form imagery at two sites in southern California. The accuracy of the backprojection is verified by comparing the measured position of a corner reflector at a calibration site to its position in the formed SAR imagery. The observed offset of the corner reflector is ≪2 m in the range direction and 12 m in the cross-range or along track direction. Images backprojected in an absolute WGS-84 Cartesian system onto 1/3 arc second or 10 m posting digital elevation data exhibit no gross registration errors. This indicates that the backprojection image formation method may be useful for processing differential radar interferometry (D-InSAR) products, where topography terms must first be removed.
Starting Page	1
Ending Page	3
File Size	491318
Page Count	3
File Format	PDF
ISBN	9781424428700
ISSN	10975659
DOI	10.1109/RADAR.2009.4977031
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2009-05-04
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Time domain analysis Image coding Spaceborne radar Production Instruments Position measurement Calibration Radar tracking Radar interferometry Surfaces
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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