Synthetic Aperture Radar Imaging of Moving Targets Using Ultra-Narrowband Continuous Waveforms

We present a novel method of imaging multiple moving targets using a SAR system transmitting ultra-narrowband continuous waveforms. Our method comprises of a new forward model that relates the velocity as well as re ectivity information at each location to a correlated received signal; and a novel image formation method based on ltered-backprojection and image-contrast optimization. The method results in well-focused re ectivity images of moving targets and their velocity estimates regardless of the target location, speed, and velocity direction. We present numerical experiments to demonstrate the performance of our imaging method.