A detection system based on the laser micro-Doppler effect for detecting
vibration-properties of moving target was developed. This system can detect the
micro-Doppler effect induced by vibration whose order of magnitude is micrometer well.
Frequency domain analysis and time-frequency joint analysis of experimental results showed
that the complex vibration of target can be effectively detected by laser micro-Doppler effect,
and also the application range of laser micro-Doppler effect is further extended. The results of
feature extraction indicate that time-frequency analysis method is fit for the analysis of
time-varying micro-Doppler signal, and the vibration signature of the moving target can be
effectively extracted. The experimental results are shown that it confirms the efficiency of this
system.
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