摘要
提出了一种基于接收信号指示强度(RSSI)的修正加权质心定位算法,它区别于以往的加权质心定位算法,在该算法中采用测试距离倒数之和代替距离和的倒数作为权重,同时提出了修正系数的概念,避免了信息淹没现象,提高了定位精度。仿真结果表明,本文算法定位精度较之前的加权质心定位算法有了明显提高,最高可达17.83%。
Based on Received Signal Strength Indicator（RSSI）,a modified weighted centroid localization algorithm is presented.Different from the former method,the sum of the reciprocal of each measured distance will be taken as the weight,instead of the reciprocal of sum.We also introduce a modified coefficient,which reduces the phenomenon of information drown,and the precision of localization is improved.The simulation result shows that the modified weighted centroid localization algorithm can provide an extra maximum precision gain of 17.83 %,compared with the former method.
出处
《传感技术学报》
CAS
CSCD
北大核心
2010年第5期717-721,共5页
Chinese Journal of Sensors and Actuators
关键词
无线传感器网络
RSSI
加权质心定位算法
修正系数
wireless sensor networks（WSN）
RSSI
weighted centroid localization algorithm
modified coefficient
