一种基于声波信号的室内定位方法  

An Indoor Positioning Method Based on Acoustic Signal

作　　者：吴修振 冯慧凤 孙烨 祁亚辉 闫实 WU Xiuzhen;FENG Huifeng;SUN Ye;QI Yahui;YAN Shi(Naval Aviation University,Yantai 264000;No.91428 Troops of PLA,Ningbo 315456)

机构地区：[1]海军航空大学,烟台264000 [2]91428部队,宁波315456

出　　处：《舰船电子工程》2024年第1期44-47,共4页Ship Electronic Engineering

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。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 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]