The study is about the classification and recognition of indoor targets.The motion dynamics and echo models of the pendulum were built,and its micro-Doppler modulation was quantitatively analyzed.And then,the micro-Doppler modulation induced by the pendulum was extracted from the radar echo by the method of Smoothed pseudo Winger-Ville time-frequency analysis.The experimental results show that the micro Doppler features extracted from the simulation echo which is the sine modulation with 1/2 pendulum period...
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