无线传感器网络中 IWCL-RSSI算法的改进

摘要

In order to improve the localization accuracy of the nodes, based on the Improved Weighted Centroid Localization and RSSI, this paper proposes an improved IWCL-RSSI algorithm.The improved IWCL-RSSI algorithm reduces the localization er-ror because the improved IWCL-RSSI algorithm increases the weight of anchor node closer to the unknown node .Experimental and simulation results show that the proposed algorithm outperforms IWCL-RSSI algorithm in terms of the localization accuracy .%为了进一步提高无线传感器网络中节点定位精度，本文在研究基于接收信号强度指示 RSSI（ Received Sig-nal Strength Indicator）的加权质心定位算法基础上，提出了一种改进的加权质心定位算法（ IWCL－RSSI，Improved Weigh-ted Centroid Localization Based on RSSI）。该改进的IWCL－RSSI算法增加了靠近未知节点的信标节点的权值，提高了未知节点的定位精度。实验结果表明，改进的IWCL－RSSI算法的节点定位精度比IWCL－RSSI算法要高。