Single-channel UWB SAR ground moving targets detection method using change detection based on single-pass sub-aperture images

Ultra-wide band synthetic aperture radar (UWB SAR) operating in VHF/UHF band has the capabilities in high resolution imaging and foliage penetration. In this paper we exploit its large beamwidth and propose a new ground moving target detection method for single-channel UWB SAR using change detection based on single-pass sub-aperture images, which is called sub-aperture SAR images change detection (SASICD). When we select several sub-apertures with appropriate size to form images, the moving target can focus on different positions in accordance with the centers of the sub-apertures, while the stationary one remains the same. The SASICD attempts to distinguish this difference and estimate the target´s position and velocity precisely. The effectiveness of the method is illustrated when we process the UWB SAR real raw data.