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http://dx.doi.org/10.9723/jksiis.2012.17.4.001

The development of indoor location measurement System using Zigbee and GPS  

Ryu, Jeong-Tak (대구대학교 전자공학부)
Kim, In-Kyung (대구대학교 전자공학학과)
Publication Information
Journal of Korea Society of Industrial Information Systems / v.17, no.4, 2012 , pp. 1-7 More about this Journal
Abstract
This paper proposes a new indoor location recognition system using a ZigBee network and a global positioning system(GPS). The proposed location recognition system applies GPS values that are mainly used for outdoor location recognition, to indoor location recognition; hence the techniques conventionally separated for the indoor and outdoor location recognition are integrated into one location recognition technique. The proposed system recognizes a location using the distance between nodes. Although the distance between nodes can be calculated by measuring the strength of the received ZigBee signals, generally the measured distance is not accurate and has high error rates since the strength of the ZigBee signals is different depending on the distance. In order to reduce the error rate, we have subdivided the output power of the received ZigBee signals into five levels. When a moving node generates a signal, each fixed node transmits the received signal strength and its own GPS information to other nodes, so the moving node can find its own accurate location in terms of the received signals.
Keywords
location Based Service(LBS); indoor location; Zigbee output power; RFID;
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Times Cited By KSCI : 1  (Citation Analysis)
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