终端异质下位置指纹的鲁棒性研究  

Research on Robustness of Location Fingerprint Under Terminal Heterogeneity

作　　者：谢代军[1] 孔范增[1] 胡捍英[1] 

机构地区：[1]解放军信息工程大学信息系统工程学院,郑州450002

出　　处：《计算机工程》2014年第5期81-85,共5页Computer Engineering

摘　　要：针对终端硬件差异对接收信号强度(RSS)测量的影响,导致传统RSS指纹鲁棒性较差的问题,借鉴信号强度差(SSD)在室内定位中的应用,提出一种抗移动终端硬件异质的SSD位置指纹。从理论上对SSD、RSS及双曲位置指纹(HLF)3种指纹的鲁棒性进行分析,并在实际无线局域网环境中应用传统K最近邻法,对3种指纹在训练定位阶段使用相同终端与不同终端2种情况下进行实验。结果证明,与RSS和HLF指纹相比,SSD指纹在抗移动终端异质方面的鲁棒性更好。Received Signal Strength（RSS） is different when measured by different terminal hardware, which causes poor robustness for the traditional fingerprint RSS. Using the application of Signal Strength Difference（SSD） for indoor reference, a robust SSD location fingerprint is proposed to resolve the problem in this paper. It analyzes the robustness of SSD, RSS and Hyperbolic Location Fingerprint（HLF） theoretically, and with the traditional localization K-Nearest Neighbor（KNN） in an actual Wireless Local Area Network（WLAN） environment, it carries out experiments on the 3 fingerprints, with a same terminal and different terminals, in the training phase and positioning phase. Experimental results show that, compared with RSS and HLF, SSD’s robustness is better on against mobile terminal heterogeneity.

关 键 词：无线局域网 室内定位 位置指纹 信号强度差 终端异质 鲁棒性 

分 类 号：TN92[电子电信—通信与信息系统]