Signature Morphology of Accelerating Targets in Squinted SAR Imagery
Garren, David A.
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This paper examines the signature morphology effects of surface targets that execute a transition from a lower speed to a higher speed during the collection interval for synthetic aperture radar (SAR) characterized by a non-zero squint angle. In general, moving target smears exhibit a residual defocus in the range direction that is less severe than that in the radar crossrange direction. This study examines the signature smear location, extent, and shape for surface targets that are transitioning to higher speed for squinted SAR collections. The SAR simulations give excellent agreement between the target signatures and the theoretically predicted contour shapes.