Autofocus is a crucial step for Synthetic Aperture Radar (SAR) image formation. The choice
of autofocus strategy is highly dependent on the compromise between SAR processing …

Despite the tremendous progress in synthetic aperture radar (SAR) navigation systems,
complete elimination of phase errors caused by random platform is challenging Automatic …

Autofocus is an essential technique for airborne synthetic aperture radar (SAR) imaging to
correct phase errors mainly due to unexpected motion error. There are several well-known …

In this paper we study the performance of two existing autofocus algorithms in a difficult SAR
scenario. One algorithm is the well known phase gradient autofocus (PGA) algorithm and …

The phase gradient autofocus (PGA) technique is used for automatic estimation and
correction of phase errors in spotlight mode synthetic aperture radar (SAR) imagery. This …

The phase-gradient autofocusing algorithm (PGA) has been widely used in spotlight
Synthetic Aperture Radar (SAR) tocompensate motion-induced blurs in the images. The …

The phase gradient autofocus (PGA) is a state of art technique for phase error correction of
synthetic aperture radar (SAR) and inverse synthetic aperture radar (ISAR). It exploits the …

Phase gradient autofocus (PGA) algorithm has been proved to be a superior method for
higher order phase error correction in SAR/ISAR image post processing. However, the …

Phase Gradient Autofocus (PGA) is an algorithm developed to estimate phase errors in
synthetic aperture radar (SAR) images. It is widely used in SAR image processing and has …

Abstract PGA (Phase Gradient Autofocus) is a representative autofocus technique to
improve the SAR (Synthetic Aperture Radar) image quality. PGA can estimate high order …