The autofocus problem in synthetic aperture radar (SAR) is considered, where phase errors
in the acquired signal data result in imagery that is improperly focused. We present a new …

We present a new noniterative approach to synthetic aperture radar (SAR) autofocus,
termed the multichannel autofocus (MCA) algorithm. The key in the approach is to exploit the …

Multichannel autofocus (MCA) for synthetic aperture radar (SAR) assumes one-dimensional
defocusing and that the perfectly focused image has low return at the image edge, where the …

Synthetic aperture radar (SAR) imaging suffers from image focus degradation in the
presence of phase errors in the received signal due to unknown platform motion or signal …

The autofocus problem in synthetic aperture radar (SAR) is considered. We precisely
characterize the multichannel nature of the SAR autofocus problem by constructing a low …

To focus synthetic aperture radar data suffering from phase errors, a novel autofocus
algorithm is presented. The algorithm uses the coordinate descent technique to estimate the …

Synthetic aperture radar (SAR) autofocus techniques that optimize sharpness metrics can
produce excellent restorations in comparison with conventional autofocus approaches. To …

Synthetic Aperture Radar (SAR) imaging suffers from image focus degradation in the
presence of phase errors in the received signals due to unknown platform or target motion …

High-resolution synthetic aperture radar (SAR) imaging requires the motion of the radar
platform to be known very accurately. Otherwise, phase errors are induced in the processing …

Autofocus algorithms deal with image restoration in a nonideal synthetic aperture radar
(SAR) imaging system. We propose a novel autofocus algorithm, denoted as MLA, that is …