Study on Raw Data-Based Two Aperture Spaceborne SAR-GMTI

The paper proposes two raw data based approaches for two aperture SAR-GMTI.The method of DPCA-Radon successfully detects and estimates parameters of moving targets in clutter-free environment.The method of DPCA-Frft-ATI achieves these purposes in clutter-rich environment and performs superiorly than commonly used raw data based method and image-based detector via improvement of signal to clutter ratio,also it can focus and relocate moving targets.Simulation results indicate feasibility and effectiveness of the methods.