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Estimation of vibration spectra including vibrating direction with synthetic aperture radar

In this paper, we develop a method for determining the vibration spectrum and vibrating direction of a vibrating object measured with Synthetic Aperture Radar. The methodology presented here is performed after the vibration history has been extracted from the SAR phase history by some other technique; then, our method is applied. The method is tested here with simulated data to verify its performance and to determine the conditions required for good vibration spectrum and direction estimates.