基于WLAN和WSN的异构网络协同定位

WLAN and WSN-Based Heterogeneous Network Collaborative Localization

针对大型建筑物复杂环境室内定位的特殊性,为了克服移动终端采用WLAN或无线传感器网络单独定位精度不高的局限性,实现移动终端精确定位导航,分析了各种无线网络室内定位系统的基本算法模型,详细介绍了多个典型无线室内定位系统的实现方法,并分析其优劣点,展现了近年来国内外对室内定位的研究成果。归纳了基于WLAN和WSN的异构网络协同定位算法研究中的关键问题,指出了如何根据终端位置环境同时搜索WLAN和无线传感器网络以及改进后的网络融合定位算法,为下一步更深入的研究打下良好的基础,在此基础上,对协同定位方法的研究前景进行了展望。

Aiming at the specialties of the large building complex environment indoor positioning,the basic algorithm model of various wireless indoor positioning system was analyzed,and the realization method of several typical wireless indoor positioning system and its advantages and disadvantages were analyzed,in order to overcome the limitations of the mobile terminal in separatly positioning by using WLAN or WSN,and to realize accurate positioning navigation.Several indoor positioning researches both in and abroad in recent years were showed.The key problems of heterogeneous network based on WLAN and WSN in the study of collaborative localization algorithm were summarized.According to terminal location environment,the searching of WLAN and WSN at the same time and the improved network fusion localization algorithm were pointed out.A good foundation for the further research was made.On this basis,the research prospect of colocation method was also discussed.