Precise Aperture-Dependent Motion Compensation with Frequency Domain Fast Back-Projection Algorithm
Precise azimuth-variant motion compensation (MOCO) is an essential and difficult task for high-resolution synthetic aperture radar (SAR) imagery.In conventional post-filtering approaches, residual azimuth-variant motion errors are generally compensated through a Mouthpiece set of spatial post-filters, where the coarse-focused image is segmented int