광(光)을 이용한 분산 센서 노드의 위치 추정

Abstract

This paper presents a new ranging method, which uses the optics triangle method instead of received signal strength indication, to measure the distance from sink to sensor node in distributed sensor nodes system. Using optics triangle method, we can measure the distance to sensor node with known length between transmitter and receiver in sink side, and the angle of reflection. The simulation result, with distance measurements from three different sinks and least-square position estimation algorithm, indicates that position estimation with proposed method is successful. In addition, using optics triangle method will also help energy consumption and sink device simplicity.