Estimate method of time of arrival in acoustic ranging

MENG Ling-jun1; XIA Shan-hong1

doi:10.13873/j.1000-97872007.11.034

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Estimate method of time of arrival in acoustic ranging

更新时间：2025-09-11

- Estimate method of time of arrival in acoustic ranging
- Issue 11, Pages: 22-24+27(2007)
- 作者机构：
  
  1. 中国科学院电子学研究所传感技术联合国家重点实验室北方基地
  2. 中国科学院电子学研究所传感技术联合国家重点实验室北方基地,北京,100080
  3. 中国科学院研究生院
  4. 中北大学电子测试技术国家重点实验室
  5. ,山西,太原,030051
- 作者简介：
- 基金信息：
- DOI：10.13873/j.1000-97872007.11.034
  CLC： TP274;TP212.9
- Published：2007
- 稿件说明：
移动端阅览
[1]孟令军,夏善红.一种音频测距信号到达时刻估计方法[J].传感器与微系统,2007(11):22-24+27.

MENG Ling-jun1, XIA Shan-hong1. Estimate method of time of arrival in acoustic ranging[J]. 2007, (11): 22-24+27.
[1]孟令军,夏善红.一种音频测距信号到达时刻估计方法[J].传感器与微系统,2007(11):22-24+27. DOI： 10.13873/j.1000-97872007.11.034.

MENG Ling-jun1, XIA Shan-hong1. Estimate method of time of arrival in acoustic ranging[J]. 2007, (11): 22-24+27. DOI： 10.13873/j.1000-97872007.11.034.

摘要

对音频测距信号到达时刻的精确估计是利用音频信号实现远距离无线传感器网络节点定位的关键。研究比较了几种常用的音频测距信号到达时刻估计方法

并提出了一种基于数字整流处理的到达时刻估计方法。它包括信噪比增强、去除直流分量、全波整流、低通滤波、到达时刻估计等过程。该方法在以dsPIC6014A单片机为控制器的节点进行了实验验证

测试结果表明:处理4 096点（12位量化）数据的计算时间约为1.5 s（10MHz时钟）

30m距离处的时间值估计误差小于3.5%。

Abstract

Precise estimate of ranging signals’TOA（time of arrival）is a key for wireless sensor networks nodes’acoustic localization.Several acoustic signals’TOA estimate methods are compared and an estimate method based on the digital signal rectifying process is introduced.It includes the following steps:increase of signal noise ratio

remove of DC（direct current）value

fullwave rectifying process

low-pass filter process and TOA estimate.It is implemented with a dsPIC6014A microcontroller.Test results show that the time of computing is about 1.5s（10MHz clock）

sample length is 4 096（12bits of each sample data）.The estimate error of TOA is less than 3.5% with 30m distance.

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references

基于四元十字阵的声被动定位研究 [D]. 刘小刚. 南京理工大学 2005

带噪语音信号的端点检测和声韵分离 [D]. 张徽强. 国防科学技术大学 2005

关于水中声源的信号检测与定向研究 [D]. 陈韶华. 西北工业大学 2003

音频检测技术与仪器[M]. 国防工业出版社 , 柏逢明, 2006

微弱信号检测[M]. 清华大学出版社 , 高晋占编著, 2004

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