西安电子科技大学学报 ›› 2022, Vol. 49 ›› Issue (3): 111-119.doi: 10.19665/j.issn1001-2400.2022.03.0013

• 信息与通信工程 • 上一篇    下一篇

一种双信标机制下的指纹库构建方法

秦宁宁1,2(),吴忆松1(),孙顺远1()   

  1. 1.江南大学 轻工过程先进控制教育部重点实验室,江苏 无锡 214122
    2.南京航空航天大学 电磁频谱空间认知动态系统工信部重点实验室,江苏 南京 211106
  • 收稿日期:2021-01-31 修回日期:2021-12-16 出版日期:2022-06-20 发布日期:2022-07-04
  • 通讯作者: 孙顺远
  • 作者简介:秦宁宁(1980—),女,教授,博士, E-mail: ningning801108@163.com|吴忆松(1995—),男,江南大学硕士研究生,E-mail: wuyisong0919@163.com
  • 基金资助:
    国家自然科学基金(61702228);国家自然科学基金(61803183);江苏省自然基金(BK20170198);江苏省自然基金(BK20180591);电磁频谱空间认知动态系统工信部重点实验室开放研究基金(KF20202104)

Algorithm for fingerprint database construction under the dual beacon mechanism

QIN Ningning1,2(),WU Yisong1(),SUN Shunyuan1()   

  1. 1. Key Laboratory of Advanced Process Control for Light Industry of Ministry of Education,Jiangnan University,Wuxi 214122,China
    2. Key Laboratory of Dynamic Cognitive System of Electromagnetic Spectrum Space,Ministry of Industry and Information Technology,Nanjing University of Aeronautics and Astronautics,Nanjing 211106,China
  • Received:2021-01-31 Revised:2021-12-16 Online:2022-06-20 Published:2022-07-04
  • Contact: Shunyuan SUN

摘要:

针对室内定位研究中指纹库构建需要耗费大量人力及时间进行信号采集的问题,提出了一种基于双信标机制和径向基神经网络的指纹库扩展算法。基于双信标机制和径向基神经网络的指纹库扩展算法能够根据场景需求灵活调整信标点采样比例,兼顾随机性与均匀性的基础上,调控各维度抽样区间内均能获取一个样本值,在保证预测准确度的前提下,取得最低采样开销;采用径向基神经网络挖掘信标点位置与信号之间的深层联系,以场景特征扩充小尺度指纹库,预测待估计位置信号强度,达到扩张指纹库的目的。通过主次信标的协同,选择具备平衡指纹精度和扩张效率的最优信标点,减少采样信标数量的同时,确保定位精度。经实测场景测试,在保障预测准确率的前提下,基于双信标机制和径向基神经网络的指纹库扩展算法受益于消除信标集合的偶然性的能力,能将指纹库扩展至140%,在差值误差控制在3.1%左右的情况下,平均预测误差较现有算法降低12%以上。

关键词: 室内定位, 指纹定位, 指纹库构建, 双信标

Abstract:

Considering the problem that the construction of fingerprint database in indoor positioning research requires a lot of manpower and time for signal acquisition,this paper proposes an algorithm for fingerprint database expansion based on the dual beacon mechanism and radial basis neural network.This algorithm can flexibly adjust the sampling ratio of beacon points according to the needs of the scene,and obtain the lowest sampling overhead under the premise of ensuring the accuracy of prediction.The algorithm uses the radial basis neural network to mine the deep connection between the position of the beacon and the signal to predict the signal strength of the position to be estimated,and achieve the purpose of expanding the fingerprint database.Tested by the actual scene,on the premise of ensuring the accuracy of prediction,the proposed algorithm expands the fingerprint database by 140%.Through experimental verification,the average prediction error is reduced by more than 12% compared with the existing algorithms.

Key words: indoor positioning, fingerprint positioning, fingerprint database construction, dual beacon

中图分类号: 

  • TN96