A vessel imagery enhancement method of spaceborne SAR based on CS-TFD

Abstract

The spaceborne synthetic aperture radar (SAR) image would become defocused and fuzzy when aiming to a moving vessel. To solve the problem, a vessel imagery enhancement method combining compressed sensing (CS) with time frequency distribution (TFD) is presented, by which, the imaging result is improved, and a series of images at different azimuth time are obtained showing the vessel posture changing. The validity of the method is verified by processing a measured SAR image.