Time-Frequency Signatures of Micro-Doppler Effect in ISAR Imaging and Parameter Estimation

F. Su, Y. Lou, M. Jiu, and Y. Zhang (PRC)

Keywords

Inverse Synthetic Aperture Radar, MicroDoppler, Modelling

Abstract

Micro-motions of targets will introduce additional frequency modulation to radar returns, which is called micro-Doppler effect. The micro-Doppler signature will be changed in ISAR imaging after dechirping and motion compensation. Two modified models for micro-Vibration and micro-Rotation in ISAR imaging is introduced and verified by simulation. Finally, method of micro-motion parameter estimation is addressed.

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