摘要
基于IEEE 802.11b/g协议的无线局域网络技术已被广泛应用于无线通信领域。无线局域网络技术无需专门硬件、接入方便并且具有定位功能,因而被运用于室内定位。首先基于测距原理对各类无线局域网络定位技术进行综述,指出它们各自的原理和应用场景,比较不同定位方法的优缺点。然后基于无线局域网络定位技术的难点,结合最新文献介绍了研究者们针对于不同定位方法提出的解决方案。在定位算法方面,概率性方法能借助于概率与统计的知识将信号信息进行最优化整合,并且定位算法灵活、精度较好,因而越来越多地受到研究者的青睐。此外,还简要介绍了基于其他算法和系统的最新定位技术,包括判别适应性神经网络算法、异构网协同定位技术和Mote Track室内定位系统等最新成果。最后从四个方面展望了无线局域网络定位技术的未来发展方向。
The wireless local area networks （WLAN） technology based on IEEE 802. llb/g protocols has been widely used in wireless communications. As no demand for specialized hardware, easy accessing and positioning function, WLAN technology is capable in indoor positioning. Firstly, based on the ranging principle of all kinds ranging, WLAN positioning technologies are reviewed in aspects of their respective principles and application scenarios, as well as comparisons of advantages and disadvantages. Then, based on the difficulties of WLAN positioning technology, the latest literatures were combined to describe the researchers＇ proposed solutions for different positioning methods. In terms of positioning algorithm, the probabilistic approach can aid the knowledge of probability and statistics to optimize the signal information extremely with flexible location algorithms for better accuracy, therefore more and more researchers have shown their interests on this method. In addition, the paper also outlines other algorithms based on the latest positioning technology and systems, including the latest achievements such as identification adaptive neural network algorithm, co-location of heterogeneous network technologies and Mote Track indoor positioning systems. Finally, the WLAN positioning technology was concluded in its entirety and the prospects for the future development was proposed in four aspects.
出处
《导航定位学报》
2014年第3期49-54,57,共7页
Journal of Navigation and Positioning
