유비쿼터스 센서 네트워크를 이용한 미지의 태그 위치 측정 시스템

Location Measurement System for the Unknown Tag using Ubiquitous Sensor Network

In this paper, we propose the location measurement algorithm of unknown tag based on RFID(Radio-Frequency IDentification) by using RSSI(Received Signal Strength Indication) and TOA(Time Of Arrival) and Kalman Filter. To do this, first we recognize the location of unknown tag by using the RSSI and TOA recognition. Second, we set the coordinate of the tag location measured by using trilateration. But the tag location data measured by this method includes the complex environmental error. So, we use the kalman filter in order to correct the location error. Finally, we validate the applicability of the propose method though the simulation in a complex environmental.