摘要
随着移动计算的飞速发展,人们对高精度室内定位技术的需求日益强烈。由于在复杂室内环境之中无法接收到室外定位中的GPS信号,众多其他替代信号被应用于室内定位,而其中最普及的当属以WiFi、蓝牙为代表的无线通信信号。该文回顾了基于无线通信信号的室内定位技术,阐述了利用信号指纹进行室内定位的基础算法,并且详细地分析了在实际工作环境下传统定位技术面临的众多挑战。在此基础上,该文讨论了如何发掘信号指纹之间的时空关系,以及融合多模态传感器数据来提升系统的定位精度。最后,该文比较了主流定位方法的效果,并讨论了室内定位技术的未来发展方向。
The growing commercial interest in indoor location-based services has spurred recent development of many indoor positing techniques.Due to the absence of global positioning system(GPS)signal,many other signals have been proposed for indoor usage.Among them,wireless communication technologies,including WiFi and bluetooth,emerge as promising ones due to the pervasive deices.In this survey,the indoor localization based on wireless communication singals is reviewed and the basic principle of fingerprint-based positioning is explained and the major challenges of existing solutions in practice is analyzed.On this basis we present how to make use of temporal or spatial signal patterns,user collaboration and motion sensors to improve the precision of the localization systems.In summary,the state-of-the-art approaches is compared and concluded and some future directions is discussed.
作者
杨铮
徐京傲
YAO Lina
YANG Zheng;XU Jing′ao(School of Software,Tsinghua University,Beijing 100084,China;School of Computer Science and Engineering,University of New South Wales,Sydney 2052,Australia)
出处
《西北大学学报（自然科学版）》
CAS
CSCD
北大核心
2018年第2期172-182,共11页
Journal of Northwest University（Natural Science Edition）
基金
国家自然科学基金资助项目(61522110)
关键词
室内定位
信号指纹
挑战与机遇
indoor localization
fingerprinting
challenge and opportunity
