Optimal Detection Range of RFID Tag for RFID-based Positioning System Using the k-NN Algorithm

Sensors

Soohee Han²  Junghwan Kim²  Choung-Hwan Park²  Hee-Cheon Yoon¹ 

[1] School of Civil Engineering, Chungnam National University, Daejeon 305-764, Korea; E-Mail:;School of Civil and Environmental Engineering, Yonsei University, Seoul 120-749, Korea; E-Mails:

关键词: ubiquitous positioning system;    RFID;    k-nearest neighbor;    detection range;   

DOI  :  10.3390/s90604543

来源: mdpi

【 摘 要 】

Positioning technology to track a moving object is an important and essential component of ubiquitous computing environments and applications. An RFID-based positioning system using the k-nearest neighbor (k-NN) algorithm can determine the position of a moving reader from observed reference data. In this study, the optimal detection range of an RFID-based positioning system was determined on the principle that tag spacing can be derived from the detection range. It was assumed that reference tags without signal strength information are regularly distributed in 1-, 2- and 3-dimensional spaces. The optimal detection range was determined, through analytical and numerical approaches, to be 125% of the tag-spacing distance in 1-dimensional space. Through numerical approaches, the range was 134% in 2-dimensional space, 143% in 3-dimensional space.

【 授权许可】

CC BY   
© 2009 by the authors; licensee Molecular Diversity Preservation International, Basel, Switzerland.