一种基于WiFi的改进型室内位置指纹定位方法
发布时间：2018-07-28 14:31
【摘要】：在室内Wi Fi位置指纹定位系统中,由于室内环境的复杂性及易变性,定位精度很难得到保证。通过实验测试分析人体对Wi Fi信号的影响以及不同位置设备接入点数目的变化情况,本文提出一种在手持设备的定位系统中增加位置指纹特征以提高定位精度的改进型定位方法。该方法将手持设备的方向角和接入点数目这2个位置特征加入位置指纹中,丰富了离线数据库的位置特征。通过对常规位置指纹库定位和改进的位置指纹库定位的测试对比,得出使用改进的位置指纹库定位可以提高系统的定位精度的结论。
[Abstract]:Because of the complexity and variability of indoor environment, it is difficult to ensure the precision of indoor Wi Fi position fingerprint location system. The influence of human body on Wi Fi signal and the number of access points in different locations are analyzed by experiment. In this paper, an improved location method is proposed, in which the location fingerprint features are added to the location system of handheld devices to improve the positioning accuracy. In this method, the location features of the handheld device and the number of access points are added to the location fingerprint, which enriches the location features of the off-line database. By comparing the conventional location and the improved location of the fingerprint database, it is concluded that the improved location fingerprint database can improve the positioning accuracy of the system.
【作者单位】： 上海海事大学科学研究院;上海海事大学航运技术与控制工程交通行业重点实验室;
【分类号】：TN92
本文编号：2150532
[Abstract]:Because of the complexity and variability of indoor environment, it is difficult to ensure the precision of indoor Wi Fi position fingerprint location system. The influence of human body on Wi Fi signal and the number of access points in different locations are analyzed by experiment. In this paper, an improved location method is proposed, in which the location fingerprint features are added to the location system of handheld devices to improve the positioning accuracy. In this method, the location features of the handheld device and the number of access points are added to the location fingerprint, which enriches the location features of the off-line database. By comparing the conventional location and the improved location of the fingerprint database, it is concluded that the improved location fingerprint database can improve the positioning accuracy of the system.
【作者单位】： 上海海事大学科学研究院;上海海事大学航运技术与控制工程交通行业重点实验室;
【分类号】：TN92
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