In this paper, we review the micro-Doppler effect induced by micro-motion dynamics and provide mathematics of the micro-Doppler effect by introducing micro motions to the conventional Doppler effect. Micro-Doppler effect was originally introduced in laser systems, but it can also be observed in microwave radar systems. We introduce some interesting results on observing micro-Doppler phenomenon using microwave radar systems and potential applications to target’s feature extraction.
Victor C. Chen, Victor C. Chen,
"Micro-Doppler effect of micromotion dynamics: a review", Proc. SPIE 5102, Independent Component Analyses, Wavelets, and Neural Networks, (1 April 2003); doi: 10.1117/12.488855; https://doi.org/10.1117/12.488855