稀疏地磁点位辅助PDR室内定位研究  

Research on sparse geomagnetic point position assisted PDR indoor localization

作　　者：席超[1] 蔡劲 刘江春[1] 杨博[1] 权怀炜 XI Chao;CAI Jin;LIU Jiangchun;YANG Bo;QUAN Huaiwei(Space Star Technology Co., Ltd., Beijing 100080,China)

机构地区：[1]航天恒星科技有限公司(503所),北京100080

出　　处：《测绘工程》2022年第1期65-69,74,共6页Engineering of Surveying and Mapping

基　　金：装备预先研究项目基金(61402090106)。

摘　　要：针对室内定位中仅使用PDR定位时出现的误差较大,以及PDR地磁组合定位实时匹配中存在的处理运算量大、实时性差、地磁采集耗时长,过于浪费人力、物力、财力等问题,文中提出通过稀疏的地磁点位辅助PDR进行室内定位,采集地磁时仅采集具有代表性地方的地磁定位,其余地方仅使用PDR定位,当在室内行走时行进到事先采集好的关键点时对PDR进行矫正,误差被矫正清零后继续定位。实验结果表明,该定位方法比单纯使用PDR定位的误差改善了52%,并且与完整的地磁辅助PDR相比较,处理速度以及采集量上节省了42%和55%,但整体误差仅仅增加了12%,真正意义上实现了定位的精确和高效。In view of the large error in indoor positioning when only PDR is used,as well as the large amount of processing computation,poor real-time performance and long time of geomagnetic acquisition in real-time matching of PDR geomagnetic combination positioning,it wastes too much manpower,material resources and financial resources.Sparse geomagnetic point positions are used to assist PDR in indoor positioning.During geomagnetic acquisition,only representative places are collected for geomagnetic positioning,and PDR positioning is only used for other places.When walking indoors,PDR is corrected when moving to the pre-collected key points.The experimental result shows that this method improves the error of PDR positioning by 52%,and saves 42%and 55%in processing speed and collection amount compared with the complete geomagnetic assisted PDR,but only increases the overall error by 12%,which truly reflects the accuracy and efficiency of positioning.

关 键 词：稀疏点 地磁 PDR 室内定位 

分 类 号：TN929[电子电信—通信与信息系统]