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2015-07-28
Instantaneous Frequency Estimation Methods of Micro-Doppler Signal
By
Progress In Electromagnetics Research C, Vol. 58, 125-134, 2015
Abstract
Extracting instantaneous frequency (IF) of Micro-Doppler (M-D) is the key to estimating Micro-motion parameters. In this paper, firstly, the micro-motion model of the coning was set up. Meanwhile, the theoretical analysis and derivation of the micro-Doppler were performed. Then we introduced occlusion effect and Time Frequency transform to better accord with the complexity and reality of feature extraction of Micro-Doppler in the real world. Besides other computational complex separation methods, we extended the Viterbi algorithm for some cases and proposed two novel means, selecting local maximum value and extracting central position, to solve the dilemma which unable the Viterbi algorithm. Finally corresponding simulation correct the performance of the two methods in different Signal to Noise Ratio (SNR).The simulation analysis showed that the methods were effective if time-frequency map was not polluted seriously by noise.
Citation
Lingxiao Li Zhixing Huang Wei Zhang , "Instantaneous Frequency Estimation Methods of Micro-Doppler Signal," Progress In Electromagnetics Research C, Vol. 58, 125-134, 2015.
doi:10.2528/PIERC15060203
http://www.jpier.org/PIERC/pier.php?paper=15060203
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