计算机工程 ›› 2019, Vol. 45 ›› Issue (6): 127-133.doi: 10.19678/j.issn.1000-3428.0052863

• 移动互联与通信技术 • 上一篇    下一篇

基于固定时窗累加和的WSN声目标迭代定位方法

神显豪1,刘康勇1,奈何2,金红1   

  1. 1.桂林理工大学 信息科学与工程学院,广西 桂林541004; 2.武汉大学 电子信息学院,武汉 430072
  • 收稿日期:2018-10-15 出版日期:2019-06-15 发布日期:2019-06-15
  • 作者简介:神显豪(1980—),男,副教授、博士,主研方向为无线传感器网络、智能故障诊断技术;刘康勇,硕士研究生;奈何,博士研究生;金红(通信作者),副教授、硕士。
  • 基金项目:

    国家自然科学基金(61662018,61741303);广西自然科学基金(2015GXNSFBA139254,2016GXNSFAA380153)。

WSN acoustic target iterations positioning method based on fixed time window cumulative sum

SHEN Xianhao1,LIU Kangyong1,NAI He2,JIN Hong1   

  1. 1.College of Information Science and Engineering,Guilin University of Technology,Guilin,Guangxi 541004,China;2.Electronics Information School,Wuhan University,Wuhan 430072,China
  • Received:2018-10-15 Online:2019-06-15 Published:2019-06-15

摘要:

为提升传感器节点在环境噪声干扰下对声事件的感知能力,在最大似然累加和算法的基础上,提出固定时窗累加和方法。分析四元定位阵形参数对定位精度的影响规律,根据外接圆半径最大和参考夹角最相符原则,从感知到声事件的传感器节点中选出位置最合理的节点组合,通过多次迭代得到定位结果。仿真结果表明,与现有分布式定位方法相比,该方法的定位精度提高约30%。

关键词: 无线传感器网络, 声定位, 定位精度, 累加和算法, 多次迭代定位

Abstract:

In order to improve the sensing ability of sensor nodes to acoustic events under environmental noise interference,a fixed time window cumulative sum method is proposed based on the maximum likelihood cumulative algorithm.The influence law of quaternary positioning parameters on the positioning accuracy is analyzed.According to the principle of achieving the maximum circumradius and most appropriate reference angle, the most reasonable node combination is selected from the sensor nodes that sense the acoustic event, and the positioning result is obtained through multiple iterations. Simulation results show that compared with the existing distributed positioning method, the positioning accuracy of this method is improved by about 30%.

Key words: Wireless Sensor Network(WSN), acoustic positioning, positioning accuracy, cumulative sum algorithm, multiple iterations positioning

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