J4 ›› 2011, Vol. 38 ›› Issue (2): 105-111.doi: 10.3969/j.issn.1001-2400.2011.02.019

• Original Articles • Previous Articles     Next Articles

Micro-motion characteristic analysis and recognition of cone-shaped targets

GUANG Yongsheng1,2;ZUO Qunsheng3;LIU Hongwei1;DU Lan1;LI Yanbing1
  

  1. (1. National Key Lab. of Radar Signal Processing, Xidian Univ., Xi'an  710071, China;
    2. School of Telecommunication Engineering, Xidian Univ., Xi'an  710071, China;
    3. China Electronics Technology Group Corporation, Beijing  100846, China)
  • Received:2010-04-12 Online:2011-04-20 Published:2011-05-26
  • Contact: GUANG Yongsheng E-mail:ysguan1213@163.com

Abstract:

When the cone-shaped target is flying in exo-atmosphere, the micro-motion of the target belongs to a precession and that of the decoy belongs to a spin or a wobble. Because they are different in micro-motion, the characteristic spectrum is extracted as a recognition feature. The paper models multi-section radar signals and analyzes the micro-Doppler signature of the warhead and the decoy. Although the micro-Doppler Spectrum of precession targets,wobble targets and spin targets is approximated as a line-Spectrum, but there is a significant difference. Based on the harmonic model, eigenvalue decomposition is applied to compute the eigenvalue as the recognition feature. Simulation proves that the method is effective.

Key words: radar target recognition, micro-motion, characteristic spectrum, precession, wobble, spin