一种基于声波信号的室内定位方法
An Indoor Positioning Method Based on Acoustic Signal
吴修振 1冯慧凤 1孙烨 2祁亚辉 1闫实1
作者信息
- 1. 海军航空大学 烟台 264000
- 2. 91428部队 宁波 315456
- 折叠
摘要
针对室内机器人的定位问题,提出了一种基于声波信号的室内定位方法,该方法利用四个麦克风阵列接收同一个声源产生的Chrip声波信号,利用快速傅利叶变换求解各个麦克风阵列声波信号的互相关系数,利用互相关系数设计相应方法得到麦克风阵列的位置和方位信息,最后对互相关系数求解过程进行了仿真验证,并设计基于单片机的麦克风阵列系统对定位方法进行实验验证,结果表明,该方法有效可行,达到了厘米级的定位精度.
Abstract
Aiming at the positioning problem of indoor robots,an indoor positioning method based on acoustic signals is pro-posed.This method uses four microphone arrays to receive Chrip acoustic signals generated by the same sound source,and uses fast Fourier transform to solve the acoustic signal cross-correlation coefficient of each microphone array,which can be used to design the corresponding method to obtain the position and orientation information of the microphone array.Finally the cross-correlation co-efficient solving process is simulated and verified,and the microphone array system based on the single-chip microcomputer is de-signed to verify the positioning method experimentally.The results show that,this method is effective and feasible,and achieves centimeter-level positioning accuracy.
关键词
室内定位/声波信号/快速傅利叶变换/互相关系数Key words
indoor positioning/acoustic signal/fast Fourier transform/cross-correlation coefficient引用本文复制引用
出版年
2024
国家科技期刊平台
NSTL
万方数据