基于时频能量谱纹理特征的跳频调制方式识别

李红光; 郭英; 眭萍; 齐子森

doi:10.11959/j.issn.1000-436x.2019191

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基于时频能量谱纹理特征的跳频调制方式识别

学术论文 | 更新时间：2024-06-05

- 基于时频能量谱纹理特征的跳频调制方式识别
- Frequency hopping modulation recognition based on time-frequency energy spectrum texture feature
- 通信学报 2019年40卷第10期页码：20-29
- 作者机构：
  
  空军工程大学信息与导航学院，陕西西安 710077
- 作者简介：
  
  [ "李红光（1986- ），男，天津蓟县人，空军工程大学博士生，主要研究方向为信息对抗理论、通信信号处理。" ]
  [ "郭英（1961- ），女，山西临汾人，博士，空军工程大学教授、博士生导师，主要研究方向为信息对抗理论、通信信号处理、自适应信号处理。" ]
  [ "眭萍（1991- ），女，山西太原人，空军工程大学博士生，主要研究方向为通信信号侦察处理。" ]
  [ "齐子森（1982- ），男，河北保定人，博士，空军工程大学讲师，主要研究方向为通信信号侦察处理、阵列信号处理。" ]
- 基金信息：
  
  国家自然科学基金资助项目(61601500);全军研究生基金资助项目(JY2018C169)
- DOI：10.11959/j.issn.1000-436x.2019191
  中图分类号： TN971
- 网络出版日期：2019-10，
  
  纸质出版日期：2019-10-25
- 稿件说明：
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李红光, 郭英, 眭萍, 等. 基于时频能量谱纹理特征的跳频调制方式识别[J]. 通信学报, 2019,40(10):20-29.

Hongguang LI, Ying GUO, Ping SUI, et al. Frequency hopping modulation recognition based on time-frequency energy spectrum texture feature[J]. Journal on communications, 2019, 40(10): 20-29.
李红光, 郭英, 眭萍, 等. 基于时频能量谱纹理特征的跳频调制方式识别[J]. 通信学报, 2019,40(10):20-29. DOI： 10.11959/j.issn.1000-436x.2019191.

Hongguang LI, Ying GUO, Ping SUI, et al. Frequency hopping modulation recognition based on time-frequency energy spectrum texture feature[J]. Journal on communications, 2019, 40(10): 20-29. DOI： 10.11959/j.issn.1000-436x.2019191.

摘要

针对跳频通信调制方式识别问题，提出了一种基于时频能量谱纹理特征的跳频调制方式识别方法。该方法首先采用平滑伪Wigner-Ville分布算法获取跳频信号时频图，并经过二维维纳滤波去除时频图背景噪声，提高低信噪比条件下时频图清晰度；然后采用连通域检测算法提取每跳信号的时频能量谱并将其转化为时频灰度图，计算其直方图统计特征和灰度共生矩阵特征组成 22 维特征向量；最后通过参数优化后的支持向量机分类器对特征集进行训练、分类和识别。仿真实验表明，所提取的多维特征向量具有较强的表征能力，避免了由单一特征相似性引起的误判问题，在信噪比为-4 dB的条件下，对跳频信号BPSK、QPSK、SDPSK、QASK、64QAM和GMSK共6种调制方式的平均识别正确率达到91.4%。

Abstract

For frequency hopping modulation identification

a novel method based on time-frequency energy spectrum texture feature was proposed.Firstly

the time-frequency diagram of the frequency hopping signal was obtained by smoothed pseudo Wigner-Ville distribution

and the background noise of the time-frequency diagram was removed by two-dimensional Wiener filtering to improve the resolution of the time-frequency diagram under low SNR conditions.Then

the connected-domain detection algorithm was used to extract the time-frequency energy spectrum of each hop signal and convert it into a time-frequency gray-scale image.The histogram statistical features and the gray-scale co-occurrence matrix feature were combined to form a 22-dimensional eigenvector.Finally

the feature set was trained

classified and identified by optimized support vector machine classifier.Simulation experiments show that the multi-dimensional feature vector extracted by the algorithm has strong representation ability and avoids the misjudgment caused by the similarity of single features.The average recognition accuracy of the six modulation methods of frequency hopping signals BPSK

QPSK

SDPSK

QASK

64QAM and GMSK is 91.4% under the condition of -4 dB SNR.

关键词

Keywords

references

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