Abstract
Recently, sensor network is one of the key technologies on robotic field. Especially, position estimation of sensor node is important technology on sensor network. However, in indoor environment, pisition estimation using radio signal strength indication (RSSI) is difficult, because of multipath fading. In this paper, to solve this problem and take advantage the RF communication, we propose distance measurement sensor using RSSI based on 125kHz, which is less subject to multipath fading. And, the stability of this sensor is shown through several expriments.
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