基于二次修正的无线传感器网络RSSI测距  

A RSSI Measurement in Wireless Sensor Networks Based on the Second Correction

作　　者：陈莉[1] 郑君刚[2] 祝婵楠 陈彪[2] 刘悦[2] 

机构地区：[1]沈阳建筑大学建筑设计研究院,辽宁沈阳110168 [2]沈阳建筑大学理学院,辽宁沈阳110168 [3]沈阳供电公司,辽宁沈阳110003

出　　处：《沈阳建筑大学学报（自然科学版）》2012年第5期949-954,共6页Journal of Shenyang Jianzhu University：Natural Science

基　　金：国家自然科学基金项目(60874103)

摘　　要：目的减小信标节点与未知节点之间的测距误差,从而提高未知节点的定位精度.方法利用信标节点对测距模型的参数进行确定,并进一步引进修正系数对测量数据进行二次修正,减小信标节点与未知节点之间的测距误差.根据确定参数的测距模型对未知节点与信标节点之间的RSSI值进行计算.结果得到未知节点与信标节点两者之间测量数据,再利用修正系数对测量数据进行修正.通过实验仿真验证了二次修正的RSSI测距方法的有效性.结论笔者所提出的方法能够有效减小测距的误差.能够提高未知节点的定位精度.The paper aims to improve the location accuracy of the unknown node by reducing the range measurement error between the beacon nodes and unknown nodes. The parameters of measurement model are determined by anchor nodes, and further the measurement data corrected, which can reduce the measurement error. The measurement between unknown nodes and beacon nodes can be calculated by the measurement model, by which parameters have been determined. The measurement data could be corrected by correction factor. The proposed method has been confirmed effectively through experimental slimulation. The proposed method can effectively reduce the measurement error compared to the original RSSI measurement. The improved RSSI measurement can improve the accuracy of the unknown nodes locations.

关 键 词：无线传感器网络 RSSI测距 修正 干扰 

分 类 号：TP29[自动化与计算机技术—检测技术与自动化装置]