J4 ›› 2012, Vol. 39 ›› Issue (6): 61-65+175.doi: 10.3969/j.issn.1001-2400.2012.06.010

• 研究论文 • 上一篇    下一篇



  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)
  • 收稿日期:2011-07-24 出版日期:2012-12-20 发布日期:2013-01-17
  • 通讯作者: 周忠根
  • 作者简介:周忠根(1971-),男,西安电子科技大学博士研究生,E-mail: zhouzgen@yahoo.com.cn.
  • 基金资助:


Method for transient interference suppression in the over-the-horizon radar

ZHOU Zhonggen;SHI Yanling;SHUI Penglang   

  1. (National Key Lab. of Radar Signal Processing, Xidian Univ., Xi'an  710071, China)
  • Received:2011-07-24 Online:2012-12-20 Published:2013-01-17
  • Contact: ZHOU Zhonggen



关键词: 天波超视距雷达, 经验模式分解, 改进复经验模式分解, 瞬态干扰, 干扰抑制


Transient interference is a primary factor impairing the detection performance of Over-the-Horizon Radar (OTHR), so it must be suppressed. Therefore, a novel method based on the improved Complex Empirical Mode Decomposition (CEMD) is proposed to suppress transient interferences in OTHR. The algorithm uses the wavelet packet transform (WPT) to decompose the signal echo into a set of narrow band signals prior to the application of CEMD. Then, each of the narrow band signals is decomposed into a set of IMFs by CEMD and a screening process is conducted to remove unrelated IMFs from the result. Finally transient interferences are detected and excised in the residual signal. A key advantage of the proposed method is that it requires neither  to perform clutter suppression, nor to reconstruct data by using the prediction algorithm. This technique is applied to data from the OTHR, and the results show that the algorithm can efficiently detect and suppress transient interferences.

Key words: over-the-horizon radar, empirical mode decomposition, improved complex empirical mode decomposition, transient interference, interference suppression