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。 At present, the mainstream of indoor positioning technology hardware costs invested large, high maintenance costs later is not suitable for large-scale promotion. This paper presents a low cost and high reliability indoor positioning system based on WiFi fingerprint. First of all, a set of indoor vector map building tool is used to draw the indoor map, and then set up a WiFi fingerprint feature database, which uses WiFi signal intensity matching method to locate. Finally, the historical position is used to smooth the current position, Map to locate the results of the match correction. Experiments show that the system has a 5m positioning accuracy, good stability, as no need to deploy any external hardware, in practical applications with strong feasibility.