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

Konferenz: EUSAR 2012 - 9th European Conference on Synthetic Aperture Radar
23.04.2012 - 26.04.2012 in Nuremberg, Germany

Tagungsband: EUSAR 2012

Seiten: 4Sprache: EnglischTyp: PDF

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Wangm, Ling (College of Electronic and Information Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China)
Yazici, Birsen (Department of Electrical, Computer and Systems Engineering, Rensselaer Polytechnic Institute, 110 8th Street, Troy, NY, 12180 USA)

We present a novel method of imagingmultiple moving targets using a SAR system transmitting ultra-narrowband continuouswaveforms. Our method comprises of a new forwardmodel 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.