Smear signature morphology of surface targets with arbitrary motion in spotlight synthetic aperture radar imagery
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Authors
Garren, David Alan
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Advisors
Date of Issue
2014
Date
Publisher
Institution of Engineering and Technology
Language
Abstract
This study develops a methodology for analytically predicting the detailed smear signature morphology of surface targets with arbitrary motion in spotlight synthetic aperture radar (SAR) imagery. The radar sensor is assumed to move with constant speed and heading on a level flight path with broadside imaging geometry. Cases of uniform target motion exhibit morphology of simply curved smear shapes, as has been reported previously. However, the present analysis shows that non-uniform target motion can cause complicated smear shapes in spotlight SAR imagery. Specifically, the method of stationary phase is applied to local subaperture SAR images to yield analytic non-parametric expressions for the morphology of smear signatures within spotlight SAR imagery for surface targets with arbitrary motion trajectories. This predictive capability offers the potential of extracting some characteristics of true target motion based upon the induced SAR smear signatures alone.
Type
Article
Description
The article of record as published may be found at http://dx.doi.org/10.1049/iet-rsn.2013.0169
Series/Report No
Department
Electrical and Computer Engineering
Organization
Naval Postgraduate School (U.S.)
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NPS Report Number
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Format
15 p.
Citation
Garren, D.A., "Smear signature morphology of surface targets with arbitrary motion in spotlight synthetic aperture radar," IET Radar Sonar Navigation (2014), v.8, iss.5, pp. 435-448.
Distribution Statement
Rights
This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.