WiNet: a Gait Recognition Model Suitable for Wireless Sensing Scene

doi:10.7652/xjtuxb202007022

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WiNet: a Gait Recognition Model Suitable for Wireless Sensing Scene

更新时间：2025-07-09

- WiNet: a Gait Recognition Model Suitable for Wireless Sensing Scene
- Vol. 54, Issue 7, Pages: 187-195(2020)
- 作者机构：
  
  郑州大学软件学院,郑州,450000
- 作者简介：
- 基金信息：
- DOI：10.7652/xjtuxb202007022
  CLC： TP391
- Online First：10 July 2020，
  
  Published：2020
- 稿件说明：
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WiNet: a Gait Recognition Model Suitable for Wireless Sensing Scene[J]. 2020, 54(7): 187-195.
DOI：

WiNet: a Gait Recognition Model Suitable for Wireless Sensing Scene[J]. 2020, 54(7): 187-195. DOI： 10.7652/xjtuxb202007022.

摘要

针对现有基于Wi-Fi信号感知步态识别研究存在的特征获取不足、多人场景下单目标识别准确率低的问题

提出了一种基于频率能量图的步态识别模型WiNet。在对信道状态信息影响因子分析的基础上

选取其中的振幅数据作为步态识别的基础数据; 采用频率能量图对原始采集数据进行有效重构使其能够同时容纳步态行为对子载波内和子载波间扰动而产生的有效特征

步态特征的个体辨识度得到较大增强; 将频率能量图作为卷积神经网络模型的输入矩阵

经过多组卷积、正则和激活操作

再使用Softmax方法进行分类

得到步态行为对应的个体身份

实现了Wi-Fi环境下高准确率的多人场景单目标步态识别。与全连接神经网络、循环神经网络及基于卷积神经网络的步态识别模型进行了比较

结果表明:WiNet在40人场景实验中识别准确率达到98.5%

识别准确率得到明显提升; 在典型强/弱多径效应环境及5种人体状态的对比实验中

WiNet均能达到92%以上的识别准确率

具有良好的识别效果和鲁棒性。

Abstract

Aiming at the problems of insufficient acquisition of features and low recognition accuracy of single target for multi-person scene in gait recognition from Wi-Fi signal perception

a new gait recognition model WiNet is proposed. Depending on the channel state information impact factor analysis

the amplitude data is chosen as the basic data for gait recognition

and a mechanism named frequency energy map is adopted to reconstruct the raw data effectively in WiNet. The advantage of WiNet lies in the capacity of extracting effective features generated by the gait behavior on the inter-subcarrier and intra-subcarrier signals at the same time

which greatly improves the individual recognition in gait recognition. The frequency energy map is used as the input matrix of the convolutional neural network model. After multiple groups convolution

regulari-ation and activation operations

the softmax method is used in classification

and the individual identity corresponding to the gait behavio

关键词

Keywords

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