摘要
提出基于WiFi/PDR的初始位置融合解算方法。以检测到步数后0.2s内WiFi定位坐标为集合,将PDR中估算的相邻两步距离和航向角作为参照,通过距离阈值和角度阈值筛选相邻两步WiFi定位坐标,以距离和角度综合偏离度选择最优定位坐标。结果表明,该方法解算的初始位置精度为1.2~1.8m,比WiFi指纹定位误差缩小50%。
This paper proposes a fusion method of initial position based on WiFi/PDR.In this method,the WiFi positioning results within 0.2 s after the steps are detected are set,the adjacent two-step distances and heading angles estimated in the PDR are taken as reference,the adjacent two-step WiFi positioning results are screened by the distance and angle thresholds,and the optimal positioning results are chosen according to the degree of deviation from the angle.Experimental results show that the initial position accuracy of this method is 1.2-1.8 m,which is 50% smaller than WiFi fingerprint positioning error.
作者
李明峰
王珅
檀丁
LI Mingfeng;WANG Shen;TAN Ding(Institute of Surveying Science and Technology,Nanjing Tech University,30 South-Puzhu Road,Nanjing 211816,China;School of Geodesy and Geomatics,Wuhan University,129 Luoyu Road,Wuhan 430079,China)
出处
《大地测量与地球动力学》
CSCD
北大核心
2019年第6期602-606,共5页
Journal of Geodesy and Geodynamics
基金
江苏省重点研发计划(BE2015698)
南京市科技计划(201716027)~~
关键词
室内定位
WiFi指纹定位
行人航位推算
融合定位
indoor location
WiFi fingerprint location
pedestrian dead reckoning
fusion location
