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。

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

Abstract: 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.

Key words: Wireless Local Area Network(WLAN), indoor positionin, location fingerprint, Signal Strength Difference(SSD), terminal heterogeneity, robustness

中图分类号: 

• TN92