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�������պ����ѧѧ�� 2010, Vol. 36 Issue (9) :1094-1098    DOI:
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Micro-Doppler analysis of spatial coning precession based on generalized S transform
Lei Peng, Wang Jun, Sun Jinping, Li Shaohong*
School of Electronics and Information Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100191, China

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Abstract�� Precession characteristic is one of the significant properties for cone-shaped spatial target recognition. To analysis the micro-Doppler feature induced by precession, a method based on the generalized S transform was proposed. In the mathematical model of coning precession, the multi-coordinate system with the same origin was used to simplify model structure and computation complexity. Then the theoretical expression of the micro-Doppler due to precession was derived. The validity of the model was confirmed by computer simulation. Based on simulated radar data for precession cone, the generalized S transform was introduced and used to analyze the micro-Doppler feature in the condition of different signal to noise ratio (SNR). The experimental results in the joint time-frequency domain show that the method has large advantage in the time-frequency resolution, and is robust for the complicated micro-Doppler signal at low SNR.
Keywords�� micro-Doppler   generalized S transform   spatial target   coning precession   robustness     
Received 2009-08-17;
About author: �� ��(1985-),��,����μ����,��ʿ��,buaaray@gmail.com.
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�� ��, �� ��, ���ƽ, ���ٺ�.���ڹ���S�任�Ŀռ�׶�����΢�����շ���[J]  �������պ����ѧѧ��, 2010,V36(9): 1094-1098
Lei Peng, Wang Jun, Sun Jinping, Li Shaohong.Micro-Doppler analysis of spatial coning precession based on generalized S transform[J]  JOURNAL OF BEIJING UNIVERSITY OF AERONAUTICS AND A, 2010,V36(9): 1094-1098
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http://bhxb.buaa.edu.cn//CN/     ��     http://bhxb.buaa.edu.cn//CN/Y2010/V36/I9/1094
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