计算机工程与应用
計算機工程與應用
계산궤공정여응용
Computer Engineering and Applications
2015年
21期
88-91
,共4页
彭泓%赵阳%夏天鹏
彭泓%趙暘%夏天鵬
팽홍%조양%하천붕
接收信号强度指示(RSSI)%质心定位算法%分段测距%链路质量指示(LQI)
接收信號彊度指示(RSSI)%質心定位算法%分段測距%鏈路質量指示(LQI)
접수신호강도지시(RSSI)%질심정위산법%분단측거%련로질량지시(LQI)
Received Signal Strength Indicator(RSSI)%centroid localization algorithm%segments ranging%Link Quality Indicator(LQI)
为消弱接收信号强度指示误差对无线传感器网络节点定位精度的影响，提出基于优化接收信号强度指示测距精度的加权质心定位算法。该算法根据接收信号强度指示（RSSI）和链路质量指示（LQI）在不同距离段的衰落曲线起伏的波动状况，采用分段测距的方法优化RSSI的测距精度，接着将优化后的距离值作为加权质心算法的权值因子对节点进行定位，进而提高定位精度。实验结果验证了该优化算法的有效性。
為消弱接收信號彊度指示誤差對無線傳感器網絡節點定位精度的影響，提齣基于優化接收信號彊度指示測距精度的加權質心定位算法。該算法根據接收信號彊度指示（RSSI）和鏈路質量指示（LQI）在不同距離段的衰落麯線起伏的波動狀況，採用分段測距的方法優化RSSI的測距精度，接著將優化後的距離值作為加權質心算法的權值因子對節點進行定位，進而提高定位精度。實驗結果驗證瞭該優化算法的有效性。
위소약접수신호강도지시오차대무선전감기망락절점정위정도적영향，제출기우우화접수신호강도지시측거정도적가권질심정위산법。해산법근거접수신호강도지시（RSSI）화련로질량지시（LQI）재불동거리단적쇠락곡선기복적파동상황，채용분단측거적방법우화RSSI적측거정도，접착장우화후적거리치작위가권질심산법적권치인자대절점진행정위，진이제고정위정도。실험결과험증료해우화산법적유효성。
To weaken the received signal strength indication error of wireless sensor network node positioning accuracy, this paper proposes a weighted centroid localization algorithm to optimize the received signal strength indicator ranging precision. The algorithm is based on the Received Signal Strength Indicator(RSSI)and the Link Quality Indicator(LQI) in the fluctuation of the fading fluctuation curves at different distances. It uses the method of piecewise ranging accuracy optimization RSSI, then the optimized distance is valued as the weight factor weighted centroid algorithm to locate the node, so it improves the positioning accuracy. Simulation results show the validity of the optimization algorithm.
