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| Method for Micro-motion Target Recognition and Motion Parameter Extraction Based on Time-frequency Analysis |
| Wang Lu Liu Hong-wei |
| National Lab of Radar Signal Processing, Xidian University, Xi’an 710071, China |
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Abstract Spatial motion feature is one of main target features for missile target identification. This paper investigates micro-motion of the missile target. Time-frequency analysis is used to extract micro-Doppler signature, based on which an approach is proposed for estimating the linear sum of the micro-Dopplers of scatters. Motion parameters can be extracted by applying Fourier Transform to the sum. Then waveform entropy is presented for the missile identification. The simulation results and the recognition results validate the effectiveness of theoretical analysis.
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Received: 25 August 2009
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Corresponding Authors:
Wang Lu
E-mail: lucy_wanglu@yahoo.com.cn
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2010, Vol. 32 
