›› 2016, Vol. 29 ›› Issue (10): 4-.

• 论文 • 上一篇    下一篇

一种FSK/BPSK复合调制雷达脉冲信号识别技术

王曙光,王旭东,郑步生   

  1. (南京航空航天大学 电子信息工程学院,江苏 南京 211106)
  • 出版日期:2016-10-15 发布日期:2016-11-14
  • 作者简介:王曙光(1992-),男,硕士研究生。研究方向:雷达信号识别。王旭东(1978-),男,博士,副教授。研究方向:信号检测等。
  • 基金资助:

    国家自然科学基金资助项目(61201208)

A Novel Approach to the Recognition of FSK/BPSK Hybrid Modulation Radar Signals

WANG Shuguang, WANG Xudong, ZHENG Busheng   

  1. (School of Electronic and Information Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 211106, China)
  • Online:2016-10-15 Published:2016-11-14

摘要:

在电子对抗领域,信号调制方式识别是进行雷达分选、干扰施放的基础,得到广泛研究。对此,文中提出了一种以信号频谱相像系数和幅度统计参数为分类特征的FSK/BPSK复合调制雷达脉冲信号识别算法。算法首先提取雷达脉冲信号的频谱相像系数和幅度统计参数,然后采用分层结构的神经网络分类器进行识别。该算法不仅能识别FSK/BPSK复合调制信号,且对其他常用雷达信号调制方式的识别不产生干扰。仿真结果表明,针对FSK/BPSK以及CW、LFM、BPSK、QPSK、FSK等常用雷达信号调制类型,在信噪比>5 dB时,分类正确率可达98%以上。

关键词: FSK/BPSK, 特征提取, 调制方式识别, 神经网络

Abstract:

The recognition of signal modulation is a base problem for sorting radar signals and releasing jamming signals in the area of electronic countermeasure. In this paper, a novel method is proposed for the recognition of hybrid modulation radar signal combined with FSK and BPSK based on the resemblance coefficient and amplitude parameter. The proposed approach recognizes FSK/BPSK signals without negative effect on the modulation recognition of other received radar signals. After feature extracting of radar signal spectrum, a hierarchical neural network is designed for identifying the common used six radar modulation types. Simulation results show that the successful recognition rate is over 98% with the SignaltoNoiseRatio (SNR) greater than 5 dB.

Key words: FSK/BPSK hybrid modulation signal, feature extraction, modulation recognition, neural network

中图分类号: 

  • TN971