Signature morphology effects of squint angle for arbitrarily moving surface targets in spotlight synthetic aperture radar
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Authors
Garren, David Alan
Subjects
Moving targets
Rad
Radar signatures
Range migration
Synthetic aperture radar (SAR)
Target migrationi
Rad
Radar signatures
Range migration
Synthetic aperture radar (SAR)
Target migrationi
Advisors
Date of Issue
2015-11
Date
Publisher
IEEE
Language
Abstract
This investigation examines the phenomenology effects of the squint angle on the morphology of moving target smears in spotlight synthetic aperture radar (SAR). This analysis includes both the smears resulting from standard image formation applied to simulated radar measurements as well as the theoretical predictions for the central contours of the signatures. In particular, this paper generates the down-range and cross-range components of the predicted central 2-D contours of mover signatures, including the locations of the cross-range offsets. The analytics for squinted geometry include additional contributions in the signature contour equations that do not arise for the case of broadside imaging. These terms can affect the overall contour morphology, particularly in terms of shape and extent. Numerous examples are presented to demonstrate that the signature prediction equations yield excellent agreement with standard image formation with simulated radar data. Therefore, this analysis can provide an effective tool in predicting the shape, extent, and location of smears due to arbitrarily moving surface targets for squinted spotlight SAR.
Type
Article
Description
The article of record as published may be found at http://dx.doi.org/10.1109/TGRS.2015.2436371
Series/Report No
Department
Electrical and Computer Engineering
Organization
Naval Postgraduate School (U.S.)
Identifiers
NPS Report Number
Sponsors
Funder
Format
11 p.
Citation
Garren, D.A.. "Signature morphology effects of squint angle for arbitrarily moving surface targets in spotlight
synthetic aperture radar," IEEE Transactions of Geoscience and Remote Sensing, v. 53, no.11, (November 2015), pp.6241-6251.
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.