RFID Support for Accurate 3D Localization
RFID Support for Accurate 3D Localization
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DOI：
10.1109/tc.2012.83
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发表时间：
2013-07
影响因子：
3.7
通讯作者：
Jullawadee Maneesilp;Chong Wang;Hongyi Wu;N. Tzeng
中科院分区：
文献类型：
--
作者：
Jullawadee Maneesilp;Chong Wang;Hongyi Wu;N. Tzeng
本文寻求 RFID 对定位的支持，旨在精确定位 3D 空间中的物体。给定一组 RFID 标签和/或阅读器部署为六面体中已知位置（如集装箱或储藏室）的参考点，本文考虑了被动和主动定位方案。作为第一个无距离 3D 定位，我们的方案仅依赖于 RFID 标签和阅读器，无需其他设备或传感器，并且避免了根据接收到的无线信号强度或相位差进行距离估计的需要。我们的无源方案定位附着在目标物体上的 RFID 标签，以标签和阅读器作为参考点。主动方案通过迭代确定最佳覆盖激活参考标签的 3D 球体来定位 RFID 读取器，称为决策边界优化方案 (DeB)。使用 Alien RFID 套件进行的模拟和测试台实验的结果表明，DeB 的性能优于其无源同类产品，定位误差为 0.07 英尺。此外，DeB 具有更好的定位精度，但速度比以前的同类产品快得多。通过增强型 DeB (EDeB)，位于六面体边或角附近的物体的精确度得到显着提高。
This paper pursues RFID support for localization, aiming to pinpoint an object in 3D space. Given a set of RFID tags and/or readers deployed as reference points at known locations in a hexahedron (like shipping container or storage room), a passive and an active localization schemes are considered in this paper. Being the very first range-free 3D localization, our schemes depend solely on RFID tags and readers without other devices or sensors, and it avoids the need of distance estimation according to received wireless signal strength or phase difference. Our passive scheme locates an RFID tag attached to the target object, with both tags and readers as reference points. The active scheme locates an RFID reader, by iteratively determining a 3D sphere best covering the activated reference tags, referred to as the decision boundary optimization scheme (DeB). Results by simulations and testbed experiments using Alien RFID kits have been obtained, and they reveal that DeB outperforms its passive counterpart and achieves the localization error of 0.07 ft. Additionally, DeB yields better location accuracy and yet is much faster than a previous counterpart. With enhanced DeB (EDeB), accuracy of an object located near a hexahedron side or corner is improved considerably.