無線區域網路中結合RFID技術的室內定位與追蹤系統研究

A Study of Indoor Locating and Tracking Systems Based on Wireless Local Networks with RFID Technique

隨著無線網路技術的蓬勃發展、許多相關的服務也隨之出現。由於 GPS不適用於室內環境及無線區域網路的快速發展，使室內定位技術相對受到注目。RADAR 系統是利用IEEE 802.11 無線區域網路進行定位，但其龐大的運算量勢必對系統造成負擔，因此日後發展了預測模型 （prediction model） ，以減少運算量、節省人力與時間成本，但也因採取預測方式，必會有所誤差。無線射頻技術 （RFID） 其因可辨識使用者及標籤 （tag） 體積小、易佈建，在近年來有廣泛的需求與大量的運用。本研究提出以無線區域網路環境結合RFID 技術的定位與追蹤系統研究，期望利用RFID 技術改進RADAR與預測模型的精準度並提供即時校正的功能，設計一套適用於無線區域網路環境的室內定位與追蹤系統。

Many related services have been developed, in tandem with wirelessnetworking technologies. Since GPS does not apply to the indoorenvironment there has been much interest in developing tracking systemsfor use indoors. The RADAR system utilizes the IEEE 802.11 wirelesslocal area network to locate, but places a huge computational burden on thesystem. The future development of prediction models, in order to reducecomputation, save manpower and time, will definitely involve errors.Radio Frequency Identification (RFID) has been widely accepted andapplied because of its ability to recognize user identity (UID), its small sizetags, and easy installation. This paper proposes a combination of awireless local area network environment, and RFID technology, to producea positioning and tracking system using RFID to improve on the accuracyof RADAR and the prediction model to provide timely correctionfunctions.