This letter presents an improved polar format algorithm for nonlinear aperture and widefield
spotlight synthetic aperture radar imaging. In the proposed algorithm, the chirp z transform is …

The polar format algorithm (PFA) is a wavenumber domain imaging method for spotlight
synthetic aperture radar (SAR). The classic fixed-parameter PFA employs interpolation …

This letter theoretically extends and applies the overlapped subaperture algorithm (OSA) for
the challenging spotlight synthetic aperture radar (SAR) imaging in a quasi-forward-looking …

The Polar Format Algorithm (PFA) is the most suitable imaging algorithm for high-resolution
and highly-squinted spotlight Synthetic Aperture Radar (SAR), but the approximation of …

For conventional polar format algorithm (PFA), because of the image distortion and defocus
caused by the plane-wave assumption, the effective imaging scene is bounded to a small …

For widefield synthetic aperture radar (SAR) imaging, range-dependent motion errors and
range curvature are the main obstacle for range cell migration correction (RCMC) and …

Conventional polar format algorithm (PFA) and its variations normally assume an ideal
imaging geometry of a linear flight path, which cannot counteract the non‐uniformity of …

Curvilinear spotlight synthetic aperture radar (CSSAR) has a high degree of freedom and
can be used for 3-D imaging and video SAR (ViSAR) persistent imaging. The direct and …

Spotlight mode offers finer azimuth resolution than that achievable in stripmap mode using
the same physical antenna. The most popular spotlight synthetic aperture radar (SAR) …

This letter proposes a new motion compensation approach for high-squint and high-
resolution airborne spotlight synthetic aperture radar (SAR) integrated with polar format …