Localization Systems Using Passive UHF RFID
Localization Systems Using Passive UHF RFID
复制标题
使用无源 UHF RFID 的定位系统
DOI：
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发表时间：
2009
期刊：
影响因子：
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通讯作者：
D. Engels
中科院分区：
文献类型：
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作者：
Jae Sung Choi;H. Lee;R. Elmasri;D. Engels
由于收集物体的空间信息通常在基于RFID的应用中提供大量扩展功能，因此近年来已经开发了许多不同的定位系统。确定和估计询问区域中的标记对象的物理位置被称为定位。在本文中，我们研究了无源超高频RFID系统的属性，如距离和RSSI（接收信号强度指标）之间的关系，性能之间的差异，同类型的无源标签，标签的可读性。提出了一种基于接收信号强度的定位算法。定位使用k-最近邻算法来估计目标标签的物理位置。为了提高被动标签附着目标定位的准确性，将属性和特征应用于定位算法中。根据实验分析，我们提出的方法显示出超过34%的改进相比，使用单阅读器和单天线，和13个参考标签的k-最近邻算法。
Since gathering spatial information of objects often provides a large number of extended functions in RFID based applications, many different localization systems have been developed in recent years. Determining and estimating the physical location of tagged objects in an interrogating area is known as localization. In this paper, we study properties of passive UHF RFID systems such as the relationship between distance and RSSI (Received Signal Strength Indictor), performance variations among the same type of passive tags, and readabilities of tags. We propose a received signal strength based Localization Algorithm using passive UHF RFID system. The localization uses the k-nearest neighbor algorithm to estimate the physical position of the target tag. To improve the accuracy of the passive tag attached object location, the properties and characteristics are applied to the localization algorithm. According to the analysis of experimentation, our proposed approach shows over 34% improvement compared with the k-Nearest Neighbor algorithm with the use of single reader and a single antenna, and 13 reference tags.