基于WLAN的室内定位方法研究

Indoor Positioning Method Based on WLAN

关键词:  室内定位  WLAN定位  三边定位法  指纹定位法  粗定位迭代校准法

Key words:  Indoor positioning  WLAN positioning technology  Trilateral positioning method  Fingerprint positioning method  Rough positioning iterative calibration method

摘要:

室内定位技术是指当携带定位设备的人或物处于室内环境时，携带者或外部监控系统获取其室内位置信息的技术。选取了目前应用前景较为广泛的WLAN定位技术进行研究，阐述了WLAN室内定位技术的基本原理，对比分析了目前两大WLAN定位技术：三边定位法和指纹定位法。针对现有技术的不足提出了新算法进行优化和改进，选取实际环境设计实验验证算法性能，结果表明新算法综合现有技术优点，可在降低成本的同时提高精度并减少运算时间。

Abstract:

Indoor positioning technology refers to the carrier or the external monitoring system to obtain the indoor location information when the person or thing carrying the positioning equipment is in the indoor environment. This paper selects WLAN indoor positioning technology which is widely used at present as an object of study, describes the basic principle of WLAN indoor positioning technology, compares and analyzes the current two WLAN positioning technologies, trilateral positioning method and fingerprint positioning method. In order to optimize and improve the existing technology, the new algorithm is proposed. The experiment which is used to verify the performance of the algorithm is designed based on actual environment. The result shows that the new algorithm, combining the advantages of the prior arts, can improve the accuracy and reduce the operation time and cost.