仿蝎子振源定位机理的位置指纹室内定位方法  

Indoor positioning method based on location fingerprinting of imitating mechanism of scorpion vibration source

作　　者：刘富[1,2] 权美静 王柯[2] 刘云[2] 康冰[2] 韩志武[3] 侯涛[2,3] LIU Fu;QUAN Mei-jing;WANG Ke;LIU Yun;KANG Bing;HAN Zhi-wu;HOU Tao(State Key Laboratory of Automotive Simulation and Control,Jilin University,Changchun 130022,China;College of Communication Engineering,Jilin University,Changchun 130022,China;Key Laboratory of Bionic Engineering,Ministry of Education,Jilin University,Changchun 130022,China)

机构地区：[1]吉林大学汽车仿真与控制国家重点实验室,长春130022 [2]吉林大学通信工程学院,长春130022 [3]吉林大学生物工程仿生教育部重点实验室,长春130022

出　　处：《吉林大学学报（工学版）》2019年第6期2076-2082,共7页Journal of Jilin University:Engineering and Technology Edition

基　　金：国家自然科学基金重点项目（51835006）

摘　　要：针对基于接受信号强度(RSS)的位置指纹室内定位方法易受到多径效应及噪声干扰而导致定位精度低这一问题,提出了一种仿蝎子振源定位机理的位置指纹室内定位方法。该方法首先仿蝎子的n/1神经元构型构建神经元结构对振动信号进行编码,将振动信号转化为脉冲。然后,提取脉冲作为位置指纹特征,并利用该脉冲建立位置指纹特征库。最后,用加权K近邻(WKNN)算法进行振源位置估计。为验证本文算法的有效性,模仿蝎子生理结构,搭建了一套仿蝎子振动感知的振动信号采集系统,在室内环境中进行用户踏步信号的采集,并根据振动数据进行定位试验。结果表明:本文提出的仿蝎子n/1神经元构型的位置指纹定位方法比基于RSS的位置指纹定位方法的平均定位准确度提高了0.1484 m。The fingerprint indoor localization method based on the Received Signal Strength(RSS)is vulnerable to multipath effect and noise interference,resulting in low positioning accuracy.To solve this problem,an indoor positioning method based on location fingerprinting of imitating the mechanism of scorpion vibration source location is proposed.Firstly,the method imitates the n/1 neuron configuration of scorpion to construct the neuron structure,in order to encode the vibration signal and transform the vibration signal into pulses.Secondly,pulses are extracted as the location fingerprint feature,and then the location fingerprint feature database is established by the number of pulses.Finally,the Weighted K-Nearest Neighbours algorithm is used to estimate the position of vibration source.To verify the performance of the proposed algorithm,a vibration signal acquisition system is set up to imitate the vibration perception of scorpions.It is used to collect the user′s step signals in the indoor environment.The experimental results indicate that the proposed method can improve the average positioning accuracy by 0.1484 meters compared with the location fingerprinting based on RSS.

关 键 词：信息处理技术 室内定位 蝎子 位置指纹 加权K近邻 

分 类 号：TN911.73[电子电信—通信与信息系统]