利用差分误差改正的无线局域网指纹定位方法  

WLAN Fingerprinting Positioning Based on Differential Error Adjustment

作　　者：刘克强[1] 汪云甲[2] 闫中亚 

机构地区：[1]中国矿业大学环境与测绘学院,江苏徐州221116 [2]国土环境与灾害监测国家测绘地理信息局重点实验室,江苏徐州221116 [3]江苏省资源环境信息工程重点实验室,江苏徐州221116

出　　处：《导航定位学报》2014年第4期46-48,67,共4页Journal of Navigation and Positioning

摘　　要：室内环境的多变使得无线局域网信号强度不稳定,直接影响了指纹定位的结果。通过实测发现,无线局域网的信号强度有较强的时变性,很难通过一次采样获得整体的信号强度信息,拟采用差分模型来消除信号强度时变影响,通过实测发现,该方法能够改善定位效果。The signal strength of WLAN is unstable in indoor environment which influences the result of WLAN fingerprinting positioning. By conducting an experiment, the time-changing feature of WLAN signal is found out and illustrated in this paper. It seems impossible to get all the information of WLAN signal in a single sampling in an indoor case. To eliminate time-changing error, this paper present a differential method and after the test, perform indicates it can he utilized to improve the result.

关 键 词：室内定位 无线局域网定位 指纹定位 差分误差改正 

分 类 号：TN96[电子电信—信号与信息处理]