摘要
目前主流的室内定位技术的硬件成本投入大、后期维护成本高,不适合大面积推广。本文提出了一种基于WiFi指纹的低成本高可靠性的室内定位系统。首先实现了一套室内矢量地图构建工具用于绘制室内地图,然后建立WiFi指纹特征数据库,采用基于WiFi信号强度匹配的方法进行定位,最后利用历史位置对当前位置进行平滑,并结合自制的室内矢量地图对定位结果进行匹配修正。实验表明,该系统具有5m的定位精度,稳定性好,由于不需要部署任何的外部硬件,在实际应用中具有较强的可行性。
Current indoor positioning systems are unsuitable for wildly promotion because of the high cost of hard-ware input and post maintenance. For solving this problem, this paper proposes a low cost and hi positioning system based on WiFi fingerprint. First, develop a tool for creating and drawing the gh reliability indoor indoor vector map. Then establish the WiFi fingerprint database, and use WiFi signal strength to calculate current position. Finally, make use of historical position to correct the positioning results, and use the indoor map to match them. The experimental re- sults show that this system has 5m positioning accuracy and good stability. This system has strong feasibility because no external hardware is needed.
出处
《激光杂志》
北大核心
2017年第9期140-145,共6页
Laser Journal
基金
河北省高等学校科学研究计划青年基金项目(QN2016204)
