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基于深度学习的复合神经网络机场信号检测框架

侯进 吕志良 徐茂 吴佩军 刘雨灵 张笑语 陈曾

侯进, 吕志良, 徐茂, 吴佩军, 刘雨灵, 张笑语, 陈曾. 基于深度学习的复合神经网络机场信号检测框架[J]. 西南交通大学学报, 2019, 54(4): 863-869, 878. doi: 10.3969/j.issn.0258-2724.20180164
引用本文: 侯进, 吕志良, 徐茂, 吴佩军, 刘雨灵, 张笑语, 陈曾. 基于深度学习的复合神经网络机场信号检测框架[J]. 西南交通大学学报, 2019, 54(4): 863-869, 878. doi: 10.3969/j.issn.0258-2724.20180164
HOU Jin, LÜ Zhiliang, XU Mao, WU Peijun, LIU Yuling, ZHANG Xiaoyu, CHENG Zeng. Combined Neural Networks Based on Deep Learning for Signal Detection in Aeronautical Communications[J]. Journal of Southwest Jiaotong University, 2019, 54(4): 863-869, 878. doi: 10.3969/j.issn.0258-2724.20180164
Citation: HOU Jin, LÜ Zhiliang, XU Mao, WU Peijun, LIU Yuling, ZHANG Xiaoyu, CHENG Zeng. Combined Neural Networks Based on Deep Learning for Signal Detection in Aeronautical Communications[J]. Journal of Southwest Jiaotong University, 2019, 54(4): 863-869, 878. doi: 10.3969/j.issn.0258-2724.20180164

基于深度学习的复合神经网络机场信号检测框架

doi: 10.3969/j.issn.0258-2724.20180164
详细信息
    作者简介:

    侯进(1969—),女,副教授,博士,研究方向为计算机图形学、机器学习、深度学习、人工智能,E-mail:jhou@swjtu.edu.cn

  • 中图分类号: V221.3

Combined Neural Networks Based on Deep Learning for Signal Detection in Aeronautical Communications

  • 摘要: 针对信号调制识别对复杂通信环境缺乏适应性与精度不足的问题,提出一种基于深度学习的多特征复合神经网络框架. 该框架首先使用前端卷积神经网络检测信号载波特征,再对前端初筛选信号执行预处理将其转换为信号时频图,最后设计了后端轻量化卷积神经网络,检测信号时频特征. 基于TensorFlow平台的复合神经网络对机场真实信号检测精度达到99.23%,实验表明该方法可有效应用于实时机场信号检测.

     

  • 图 1  系统框架

    Figure 1.  System framework

    图 2  前端CNN权值层

    Figure 2.  Weight layers of front CNN

    图 3  信号预处理过程

    Figure 3.  Signal data pre-process

    图 4  后端原型CNN构件

    Figure 4.  Prototypical backend CNN components

    图 5  拆解卷积核

    Figure 5.  Convolutional kernel deconstruction

    图 6  残差连接

    Figure 6.  Residual connection

    图 7  前端CNN与决策树混淆矩阵

    Figure 7.  Confusion matrices of front CNN and decision-tree

    图 8  前端CNN与文献[8]验证精度曲线

    Figure 8.  Validation curves of front CNN and Ref. [8]

    图 9  后端CNN第三层卷积提取特征

    Figure 9.  Extracted features of the third convolutional layer of backend CNN

    图 10  后端CNN验证精度曲线

    Figure 10.  Validation curves of backend CNN

    图 11  后端与V2 CNN混淆矩阵

    Figure 11.  Confusion matrices of backend CNN and V2 CNN

    图 12  后端CNN单通道灰度训练

    Figure 12.  Single-channel grey images for backend CNN

    图 13  各项试验的精度与耗时

    Figure 13.  Accuracy and consumed time of experiments

    表  1  决策树与前端CNN对比结果

    Table  1.   Comparison between decision-tree and front CNN

    方法识别准确率/%耗时/s
    前端 CNN90.168.5
    决策树81.333.8
    下载: 导出CSV

    表  2  前端CNN与文献[8]CNN对比结果

    Table  2.   Comparison of front CNN and that in Ref. [8]

    方法识别准确率/%耗时/sCNN参数量
    前端 CNN90.168.5707 756
    文献[8] CNN89.3112.72 828 628
    下载: 导出CSV

    表  3  后端CNN与V2 CNN对比结果

    Table  3.   Comparison of backend CNN and V2 CNN

    方法识别准确率/%耗时/sCNN参数量
    后端 CNN99.191 864.6685 380
    V2 CNN99.962 343.358 837 142
    下载: 导出CSV

    表  4  基于复合CNN的实验

    Table  4.   Combined CNN experiment

    方法识别准确率/%耗时/s
    复合 CNN99.23411
    下载: 导出CSV
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出版历程
  • 收稿日期:  2018-03-10
  • 修回日期:  2018-07-02
  • 网络出版日期:  2018-07-08
  • 刊出日期:  2019-08-01

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