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

• 研究论文 • 上一篇    下一篇

空间锥体目标微动特性分析与识别方法

关永胜1,2;左群声3;刘宏伟1;杜兰1;李彦兵1
  

  1. (1. 西安电子科技大学 雷达信号处理国家重点实验室,陕西 西安  710071;
    2. 西安电子科技大学 通信工程学院,陕西 西安  710071;
    3. 中国电子科技集团公司,北京  100846)
  • 收稿日期:2010-04-12 出版日期:2011-04-20 发布日期:2011-05-26
  • 通讯作者: 关永胜
  • 作者简介:关永胜(1979-),男,西安电子科技大学博士研究生,E-mail: ysguan1213@163.com.
  • 基金资助:

    长江学者和创新团队发展计划资助项目(IRT0954);国家自然科学基金资助项目(60772140,60901067);国家部委预研项目及国家部委预研基金联合资助项目

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

摘要:

空间锥体目标在大气层外飞行过程中存在不同的微动,目标的微动为进动,诱饵的微动为摆动或自旋.根据目标与诱饵的微动差异,提出了应用特征谱作为识别特征的分类方法.基于多散射中心信号模型,分析了进动、摆动以及自旋调制信号的微多普勒特性.分析结果表明,进动、摆动与自旋目标的微多普勒谱虽然均可以近似为线谱,但是存在明显差异.应用谐波和的形式描述回波信号,并采用特征值分解提取特征谱作为识别特征.仿真结果表明,该方法能够有效地识别目标与诱饵.

关键词: 雷达目标识别, 微动, 特征谱, 进动, 摆动, 自旋

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

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