Jiajin Lei Pattern Recognition Based on Time-Frequency Distributions of Radar Micro-Doppler Dynamics. 14-18 2005 conf/snpd/2005 SNPD http://doi.ieeecomputersociety.org/10.1109/SNPD-SAWN.2005.59 db/conf/snpd/snpd2005.html#Lei05