面向大中型机房的RSSI定位算法研究  

Research on RSSI location algorithm for large and medium generator room

作　　者：林航 李葵 林杰华[2] 乐志伟 王浩[2] 周立[2] 

机构地区：[1]国网安徽省电力公司信息通信分公司,安徽合肥230061 [2]合肥工业大学计算机与信息学院,安徽合肥230009

出　　处：《合肥工业大学学报（自然科学版）》2017年第9期1193-1198,共6页Journal of Hefei University of Technology：Natural Science

基　　金：国家自然科学基金资助项目(61175033)

摘　　要：针对大中型机房中信号阅读器只能部署在较高安全位置,不能直接采用基于测距的接收的信号强度指标(received signal strength indication,RSSI)定位算法进行三维定位的问题,文章通过分析机房内特有的室内环境,提出了在原定位算法计算结果的基础上,采用逼近定位算法的方案。考虑障碍物对信号传播的遮挡,修正测距算法中阅读器到有源标签的距离矢量;引入参考节点方向矢量权重,改善加权质心法,迭代矫正定位,并对异常结果进行矫正处理。相比基于RSSI原定的定位算法,其结果不仅给出了三维坐标,在平面上的定位精度也提高了约60%。As the signal reader in large and medium generator room can only be deployed in high security posi- tions, three-dimensional positioning can not be made directly by the received signal strength indication（RSSI） location based on the ranging algorithrn. A localization algorithm using approximation scheme is proposed on the basis of the results of original positioning method by considering the unique features of generator room The distance vector of each signal reader to the active tag in the ranging algorithm is corrected by considering the blocking of Obstacles to the signal propagation. The improved weighted centroid algorithm is presented by introducing the weights of the reference node directional vector, the approach of iterative correction is adopted and the correction processing about abnormal results is made The presented method not only gives the three dimensional coordinate but also improves the accuracy of planar positioning by nearly 60% compared to the o- riginal method of RSSI location.

关 键 词：接收的信号强度指示(RssI)定位 三维定位 有源标签 障碍物.力口权质心法 定位精度 

分 类 号：TP399[自动化与计算机技术—计算机应用技术]