國立臺灣大學資訊工程學系Okuda, KenjiKenjiOkudaYeh, Shun-YuanShun-YuanYehWu, Chon-InChon-InWuChang, Keng-HaoKeng-HaoChangChu, Hao-HuaHao-HuaChu2006-09-272018-07-052006-09-272018-07-052005http://ntur.lib.ntu.edu.tw//handle/246246/20060927122838710811This 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.application/pdf264870 bytesapplication/pdfzh-TWotherhttp://ntur.lib.ntu.edu.tw/bitstream/246246/20060927122838710811/1/loca_2005.pdf