Wide-angle SAR imaging based on sub-apertures joint sparse reconstruction

A Modified Factorized Geometrical Autofocus Method for Wide Angle SAR

“…INTRODUCTION 1 YNTHETIC aperture radar (SAR) is a powerful and widely used microwave remote sensing system under an 1 all-time and all-weather environment [1]- [2]. As a new SAR system, the employment of wide-angle SAR (WA-SAR) can obtain higher resolution and more anisotropic scattering information by imaging the same scene from wide aspect angle which useful in target recognition [3]- [5] Until now, there are mainly two different kinds of SAR imaging methods. One is based on specific signal model, called frequency domain imaging algorithm [6]- [8].…”