中文摘要：

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。

英文摘要：

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.