Micro-Doppler Effect in Radar
Mechanical vibration or rotation of a target or structures on the target may induce additional frequency modulations on the returned radar signal which generate sidebands about the target’s Doppler frequency, called the micro-Doppler effect. Micro-Doppler signatures enable useful properties of the target to be identified. In this research project, we develop the mathematics of the mico-Doppler signatures in radar using Lie group theory, and represent the motion features with time-frequency analysis. The simulation and real experimental results confirmed that the mathematical analysis is valid. This work broadens the traditional motion representation from visual sensing.
Geometry of Radar and Target, and micro-Doppler
Time-Frequency Signatures
