摘要
节点自身定位是无线传感器网络目标定位的基础。无线传感器网络节点定位算法包括基于距离和距离无关两类。其中基于RSSI的定位算法由于实现简单而被广泛使用,但RSSI方法的测距误差较大,从而影响了节点定位精度。提出了一种基于RSSI的无线传感器网络距离修正定位算法。该算法通过RSSI测距,计算近似质心的位置,以此为参考点进行距离修正,然后确定节点的位置。仿真结果表明该算法可以提高节点定位精度。
In wireless sensor network,the node self-localization is the foundation of target localization,and it includes two classes as distance-based and distance irrelevant localizations.The RSSI-based localization algorithm,for its easy implementation,is widely,but it has a fairly big error in distance ranging.The paper presents a new RSSI-based ranging localization algorithm,which computes the location of approximate centroid with RSSI,then with it as reference node,adjusts the range,and locates the node.Simulation results show that this algorithm is of better localization precision.
出处
《通信技术》
2011年第2期65-66,69,共3页
Communications Technology
