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Micro-Doppler effect in radar: phenomenon, model, and simulation study 总被引:51,自引:0,他引:51
Chen V.C. Li F. Ho S.-S. Wechsler H. 《IEEE transactions on aerospace and electronic systems》2006,42(1):2-21
When, in addition to the constant Doppler frequency shift induced by the bulk motion of a radar target, the target or any structure on the target undergoes micro-motion dynamics, such as mechanical vibrations or rotations, the micro-motion dynamics induce Doppler modulations on the returned signal, referred to as the micro-Doppler effect. We introduce the micro-Doppler phenomenon in radar, develop a model of Doppler modulations, derive formulas of micro-Doppler induced by targets with vibration, rotation, tumbling and coning motions, and verify them by simulation studies, analyze time-varying micro-Doppler features using high-resolution time-frequency transforms, and demonstrate the micro-Doppler effect observed in real radar data. 相似文献
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