Abstract
In imaging of reflection coefficient of targets using a coherent wave, we propose a novel inverse synthetic aperture radar imaging method to obtain cross-range resolution without antenna scan or array antennas. In this method a forced vibration wave is induced outside the region of interest to vibrate the target. Sweeping the vibration frequency, a complex Doppler signal generated by the vibrated target is measured. By the Fourier transformation of the vibro-Doppler signal measured in each swept frequency, spatial reflection profile is obtained without scanning transmitter and receiver. In this paper, we show an algorithm of this method and demonstrate the validity of this method through measurements using an ultrasonic wave.
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