朱浩華臺灣大學：資訊工程學研究所奥田健次Okuda, KenjiKenjiOkuda2007-11-262018-07-052007-11-262018-07-052005http://ntur.lib.ntu.edu.tw//handle/246246/53620這篇論文提出一個利用追蹤足跡向量的方式來達到室內使用者定位系統。內容描述如何在一雙日本木屐上設計實作此一定位系統並對其做評估。這個足跡追蹤方式可以顯著的降低在環境中建置其他設備所以需要的各項花費。使用者只需要穿上此木屐，系統便可以追蹤該使用者的位置而不需要任何的設定與校正。此項特性使得此方式非常容易可以在任何環境中使用。藉由將雙腳間形成的位移向量加總，我們可以得到使用者的位置。與其他定位系統不同處在於，此法不會受到信號被阻擋及多重路徑的影響而造成系統死角。唯一的缺點是誤差會隨著步數而累加。為了處理這個問題，我們整合RFID技術來修正累積的誤差。Physical locations of people and objects have been one of the most widely used context information in context-aware applications. To enable such location-aware applications in the indoor environment, many indoor location systems have been proposed in the past decade, such as Active Badge, Active Bat, Cricket, smart, RADAR, and Ekahau. However, we have seen very limited market success of these indoor location systems outside of academic and industrial research labs. We believe that the main obstacle that prevents their widespread adoption is that they require certain level of system infrastructural support (including hardware, installation, calibration, maintenance, etc.) inside the deployed environments. Significantly reducing the needed system infrastructure serves as our main motivation to design and prototype a new footprint location system on traditional Japanese GETA (pronounced "gue-ta") sandals. This footprint location system can compute a user's physical location solely by using sensors installed on the GETA sandals. To enable location tracking, a user simply has to wear the GETA sandals with no extra user setup and calibration effort. This system works by attaching location sensors, including two ultrasonic-infrared-combo readers and one ultrasonic-infrared-combo transmitter, on the GETA sandals.1. Introduction 7 2. Related work 13 3. Initial design: Design Version I 21 3.1 Footprint Positioning Algorithm 22 3.2 Performance Evaluation 26 3.3 Revised design: Design Version II 28 3.4 Revised Footprint Positioning Algorithm 29 3.5 Performance Evaluation 29 4. Revised design: Design Version III 33 4.1Performance Evaluation 35 5. Conclusion 37376268 bytesapplication/pdfen-US追蹤位置系統Location Tracking Systemthesishttp://ntur.lib.ntu.edu.tw/bitstream/246246/53620/1/ntu-94-R90922092-1.pdf