https://scholars.lib.ntu.edu.tw/handle/123456789/115215
Title: | The GETA Sandals: A Footprint Location Tracking System | Authors: | Okuda, Kenji Yeh, Shun-Yuan Wu, Chon-In Chang, Keng-Hao Chu, Hao-Hua |
Issue Date: | 2005 | Publisher: | 臺北市:國立臺灣大學資訊工程學系 | Abstract: | This paper presents the design, implementation, and evaluation of a footprint-based indoor location system on traditional Japanese GETA sandals. Our footprint location system can significantly reduce the amount of infrastruc-ture required in the deployed environment. In its simplest form, a user simply has to put on the GETA sandals to track his/her locations without any setup or calibration efforts. This makes our footprint method easy for everywhere de-ployment. The footprint location system is based on the dead-reckoning method. It works by measuring and tracking the displacement vectors along a trial of footprints (each displacement vector is formed by drawing a line between each pair of footprints). The position of a user can be calculated by summing up the current and all previous displacement vectors. Additional benefits of the foot-print based method are that it does not have problems found in existing indoor location systems, such as obstacles, multi-path effects, signal noises, signal in-terferences, and dead spots. However, the footprint based method has a prob-lem of accumulative error over distance traveled. To address this issue, it is combined with a light RFID infrastructure to correct its positioning error over some long distance traveled. |
URI: | http://ntur.lib.ntu.edu.tw//handle/246246/20060927122838710811 | Other Identifiers: | 20060927122838710811 |
Appears in Collections: | 資訊工程學系 |
File | Description | Size | Format | |
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loca_2005.pdf | 258.66 kB | Adobe PDF | View/Open |
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