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.
Micro-Doppler effect in radar: phenomenon, model, and simulation study
IEEE Transactions on Aerospace and Electronic Systems ; 42 , 1 ; 2-21
2006-01-01
2998992 byte
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
Micro-Doppler Effect in Radar: Phenomenon, Model, and Simulation Study
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