摘要
由于铁路站场的特殊性和复杂性,现有的GPS定位算法难于满足站场巡检人员定位精度的要求。本文在分析铁路站场特性的基础上,依据站场的拓扑结构特点设计多环节地图匹配算法。即在无岔区段采用位置点匹配算法,而在有岔区段采用基于曲线拟合的地图匹配算法;在此基础上为进一步提高匹配精度和定位准确度,采用优先定位法进行定位匹配。实验结果表明,采用这种多环节地图匹配算法可使得铁路站场巡检人员定位误差率降低到3.7%,提高了地图匹配的精度和效率,满足了铁路站场巡检人员的定位需要。
Because of particularity and complexity of the railway station ＆ yard,the existing GPS positioning algorithms are unable to meet the requirements of positioning accuracy.Analyzing the features of stations and yards,the multi-link map matching positioning algorithm based on the track network topology characteristics was introduced in this paper.The point of position matching algorithm was used for no-switch sections and the curve fitting map matching algorithm for switch section.In order to further improve the matching and positioning accuracy,the priority positioning algorithm was turned to.Experiments show that by use of the multilink map matching positioning algorithm,the positioning error rate in railway stations and yards is reduced to 3.7 ％,the accuracy and efficiency of map matching are raized and positioning requirements for inspection workers are satisfied.
出处
《铁道学报》
EI
CAS
CSCD
北大核心
2013年第9期52-58,共7页
Journal of the China Railway Society
关键词
GPS定位
多环节地图匹配算法
优先定位法
定位精度
GPS positioning
multi-link map matching algorithm
priority positioning algorithm
accuracy of positioning
