长春工业大学 机构 计算机科学与工程学院,吉林,长春,130012
纸质出版:2018
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宋宇, 喻文举, 程超, 王磊. 基于WiFi、PDR、地磁相融合的室内定位研究[J]. 微电子学与计算机, 2018, 35(6): 60-64, 68.
SONG Yu, YU Wen-ju, CHENG Chao, et al. Research onIndoor Positioning Based on Fusion of WiFi, PDR and Geomagnetism[J]. 2018, 35(6): 60-64.
针对WiFi定位、PDR(行人航迹推算)定位、地磁定位的特点
提出了基于WiFi、PDR、地磁相融合的室内定位方法.所提的融合定位方法首先通过UKF(无迹卡尔曼滤波)算法将WiFi定位及PDR定位的结果进行融合得到一个改善的定位结果
通过实验及仿真验证
所提的融合室内定位方法平均定位误差低至1.41 m
取得了较好的定位精度.
In view of the characteristics of WiFi positioning
PDR (pedestrian track calculation) positioning and geomagnetic positioning
an indoor positioning method based on fusion of WiFi
PDR and geomagnetism is proposed. Firstly
the proposed fusion localization approach fuses the results of WiFi localization and PDR localization by UKF (Unscented Kalman Filtering) algorithm
and obtains an improved localization result
then
with the improved positioning result as the center
the size of the range is dynamically controlled by the standard deviation of the error in the improved positioning result and the WiFi positioning result of this time
finally
second positions are made by geomagnetic matching in this range
and the final positioning results are obtained. Through experiments and simulation
the average positioning error of the proposed fusion positioning method is as low as 1.43M
and the positioning accuracy is improved greatly.
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