基于误差区域划分的隧道人员组合定位方法  

Tunnel personnel combined localization method based on error region division

作　　者：王海英[1] 任宜青 许建[2] 张英治 WANG Hai-ying;REN Yi-qing;XU Jian;ZHANG Ying-zhi(School of Construction Machinery,Chang'an University,Xi'an 710064,Shaanxi,China;School of Management,Xi'an University of Science and Technology,Xi'an 710054,Shaanxi,China;Shaanxi Communications Holding Group Co.,Ltd.,Xi'an 710036,Shaanxi,China)

机构地区：[1]长安大学工程机械学院,陕西西安710064 [2]西安科技大学管理学院,陕西西安710054 [3]陕西省交通控股集团有限公司,陕西西安710036

出　　处：《长安大学学报（自然科学版）》2021年第6期82-90,共9页Journal of Chang’an University(Natural Science Edition)

基　　金：陕西省交通科技项目(18-33X、20-29K)。

摘　　要：针对隧道人员定位系统常用平均定位误差反映定位算法的精度,在实际应用中,某些边缘区域的定位误差远大于平均定位误差问题,提出一种基于误差区域划分的隧道人员组合定位方法,用于提高整体定位精度。首先,对常用的四边质心定位算法和极大似然估计算法进行区域分布仿真,找出其定位误差区域分布规律,分析误差形成的原因;其次,基于不同的误差区域特征,提出不同区域采取不同定位算法的解决方案,即将误差区域划分为3个区域,中间区域用四边质心定位算法进行仿真,上、下边缘区域用极大似然估计算法,以及四角区域分别将质心视作其整个区域的估算位置。最后,在对隧道环境仿真参数进行优化的基础上,对基于误差区域划分的隧道人员组合定位方法进行仿真分析。结果表明:测距误差K为3 m时,组合定位方法的平均定位误差相比于单独使用四边质心定位算法和极大似然估计算法分别减小了3.58%及45.86%,最大定位误差分别减小了48.90%及45.59%。四角区域的定位误差明显减小,上、下边缘区域的定位误差有所改善,最大定位误差的位置也有了变化。整体区域的定位误差均有不同程度的减小,定位误差分布不均匀的问题得到了改进。因此,提出的基于误差区域划分的隧道人员组合定位方法可以提高隧道人员定位系统的精度。Amid at that in practical applications,the partial positioning errors in edge region were greater than the average positioning errors,when the average positioning error was used to reflect the precision and accuracy of the positioning algorithm in a tunnel personnel positioning system,a tunnel personnel combined localization method based on error region division was proposed to enhance overall positioning accuracy.Firstly,the positioning error region distributions using the quadrilateral centroid localization algorithm and the maximum likelihood estimation algorithm was simulated to find out the law of positioning error region distributions and to analyze the causes of the error formation.Secondly,based on the characteristics of different error region,solutions for different areas using different localization algorithms were proposed.The error region was divided into three parts,the quadrilateral centroid localization algorithm was used for the middle part,the maximum likelihood estimation algorithm was used for the upper and lower edges,and the centroid was regarded as the estimated location of the four corners.Finally,on the basis of optimization of the tunnel environment simulation parameters,the tunnel personnel combined localization method based on error region division was simulated and analyzed.The results show that the average positioning error(when K=3 m)is decreased by 3.58%and 45.86%using the combined localization method,separately,when compare with those of the quadrilateral centroid localization and maximum likelihood estimation algorithms,and the maximum positioning error is reduced by 48.90%and 45.59%,separately.The positioning error of the four corners are evidently decreased,the upper and lower edges are significantly improved.The coordinate of the maximum positioning error also is diverted.The positioning errors on the entire area are reduced to various degrees,the problem of uniform positioning error region distribution has been solved.Consequently,the proposed tunnel personnel combined localiz

关 键 词：隧道工程 隧道人员定位 组合定位方法 平均定位误差 误差区域划分 

分 类 号：U458.1[建筑科学—桥梁与隧道工程]