With the development of communication technology,wireless sensor networks become a hot research topic in the field of indoor location area. In some practical situations,such as location tracking of firefighters or the old,they all need location,therefore,how to con-duct indoor location is the key point. Consider CC2431 wireless location engine as the core,elaborateting location principle,setting up the indoor location system based on ZigBee,and testing the location system. As a result,the location system meets the low-cost and low-power requirements,the location accuracy is in five meters. Finally,considering the location engine deficiencies in use,a new auxiliary lo-cation means is put forward whose name is Pedestrian Dead Recking. Two different location methods can be combined to realize more ac-curate indoor location service.%随着通信技术的发展，无线传感器网络室内定位成为了定位领域的研究热点。在一些实用场合，比如消防员或者老人位置跟踪都要用到定位，因此，如何进行室内定位是文中研究的重点。文中以CC2431无线定位引擎为核心，阐述了定位原理，搭建了基于ZigBee技术的室内定位系统，并对该定位系统进行测试分析。该定位系统满足低成本、低功耗的要求，定位精度在5m以内。最后，针对定位引擎在使用中存在的不足，提出了一种新的辅助定位手段即行人航位推算，将两种定位方法相结合，可以实现更精确的室内定位服务。
展开▼
