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采用多载波相位测距的Wi-Fi精密定位方法
无线局域网 中国剩余定理 载波相位 二次规划
2017/8/10
针对当前室内无线局域网WiFi定位方法误差大、需要额外辅助设备的问题,提出了一种基于多载波相位测距的WiFi精密定位方法。在测距环节,通过中国剩余定理求解多载波相位同余式组实现了距离重构,并给出了一种采用同差处理以降低算法噪声敏感性的方法;在定位环节,基于最小测距误差平方和准则,将带有误差的多边测距定位问题转化为受约束的二次最优规划问题,实现了分米级的Wi-Fi定位。实验与仿真结果均表明,所提...
INDOOR LOCALIZATION USING WI-FI BASED FINGERPRINTING AND TRILATERATION TECHIQUES FOR LBS APPLICATIONS
Indoor Localization Access Points Trilateration Fingerprinting Database Wi-Fi RSS GIS
2012/6/4
The past few years have seen wide spread adoption of outdoor positioning services, mainly GPS, being incorporated into everyday devices such as smartphones and tablets. While outdoor positioning has b...
Users and Network Management for Secure Interworking and Roaming in WiMAX, 3G and Wi-Fi Networks Using RII Architcture
Network Management Secure Interworking Roaming WiMAX 3G Wi-Fi Networks
2008/12/31
The increase in the usage of different access technologies has led to aneed for new mechanisms to manage interworking and roaming betweendifferent network technologies. To provide secure and seamless ...