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http://dx.doi.org/10.7840/kics.2013.38C.1.131

Indoor Position Technology in Geo-Magnetic Field  

Hur, Soojung (영남대학교 정보통신공학과)
Song, Junyeol (영남대학교 정보통신공학과)
Park, Yongwan (영남대학교 정보통신공학과)
Publication Information
The Journal of Korean Institute of Communications and Information Sciences / v.38C, no.1, 2013 , pp. 131-140 More about this Journal
Abstract
Due to the limitations of the existing indoor positioning system depending on the radio wave, at present, it is required to introduce a new method in order to improve the accuracy in indoor environment. Recently, bio-inspired technology has become the future core technology. Thus, this study examined the accurate positioning method applying the abilities that animals with homing instinct measure their position by searching geomagnetic field with the use of their biomagnets. In order to confirm the applicability of geomagnetic field, a new source for indoor positioning, this study separated the constituent materials and building structure and designed the structures that can carry the actual magnetic field sensor and the data collection module. Subsequently, this study investigated the applicability of geomagnetic field as a positioning source by establishing the positioning system of Fingerprint method. In performance evaluation of the positioning system, the geomagnetic strength-based positioning system was similar to or approximately 20 percent higher than the wireless LAN-based positioning system in the buildings with the existing wireless LAN. Thus, in the environment without infrastructure for indoor positioning, the geomagnetic, an independent earth resource, can make it possible to realize the indoor positioning.
Keywords
LBS; Fingerprint; indoor positioning; geomagnetic;
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