J4 ›› 2015, Vol. 42 ›› Issue (2): 146-151.doi: 10.3969/j.issn.1001-2400.2015.02.024

• 研究论文 • 上一篇    下一篇

组网雷达弹道目标三维进动特征提取

张栋1;冯存前1;贺思三1;童宁宁1;雷腾2   

  1. (1. 空军工程大学 防空反导学院,陕西 西安 710051; 2. 中国人民解放军95859部队,甘肃 武威 735018)
  • 收稿日期:2013-11-18 出版日期:2015-04-20 发布日期:2015-04-14
  • 通讯作者: 张栋
  • 作者简介:张栋(1990- ),男,空军工程大学硕士研究生,E-mail: zhangdongtougao@163.com.
  • 基金资助:
    国家自然科学基金资助项目(61372166);陕西省自然科学基础研究计划资助项目(2014JM8308)

Extraction of three-dimensional precession features of ballistic targets in netted radar

ZHANG Dong1;FENG Cunqian1;HE Sisan1;TONG Ningning1;LEI Teng2   

  1. (1. Air and Missile Defense College, Air Force Engineering Univ., Xi'an 710051, China; 2. Unit 95859 of PLA, Wuwei 735018, China)
  • Received:2013-11-18 Online:2015-04-20 Published:2015-04-14
  • Contact: ZHANG Dong

摘要: 针对单部雷达观测目标存在视角局限性的问题,提出了一种基于组网雷达的弹道目标三维进动特征提取法.首先,雷达网中各雷达分别从弹道目标的时间距离像信号中求得强散射点径向距离变化线性和信号,通过频谱分析估计出目标的自旋、锥旋频率以及进动角;然后,组网雷达通过系数加权法对各雷达得到的上述参数进行融合处理以提高参数精度;最后,根据雷达观测视角与微多普勒信号之间的关系,通过构造多元非线性方程组,进一步精确求解目标的三维进动参数.仿真实验证明,该方法既有效地提高了参数的估计精度,又得到进动目标的三维微动参数.

关键词: 组网雷达, 微多普勒, 三维进动特征

Abstract: To solve the problem of angle limitation of the single radar, a method for extracting three-dimensional precession characteristics of the ballistic target based on netted radar is proposed. Firstly, the linear sum signal of the scatters' radial distance is independently estimated from the time-profile signal by radar in the radar net, and the precession parameters can be extracted by the sum signal's spectral characteristics. Then to improve the precision of the estimation of parameters the above parameters are fused by the method of weighted coefficient. Lastly, making use of the relationship between the multi-view of netted radar and the micro-Doppler signal, the three-dimensional micro-motion features are obtained by solving nonlinear multivariable equation systems. Simulation results prove that the method can lead to both the high estimating precision and the three-dimensional micro-motion parameters.

Key words: netted radar, micro-Doppler, three-dimensional precession feature