摘要
节点定位技术是无线传感器网络的关键技术之一。质心定位算法是指节点依靠无线传感器网络的连通性进行定位,定位误差较大。为了提高定位精度,鉴于质心定位算法受环境影响较小,基于RSSI的定位技术使用方便的特点,文中提出了基于RSSI的一种优化加权质心定位算法。通过RSSI测距,结合优化后的加权质心定位算法,确定节点位置。仿真结果表明,该算法降低了定位的平均误差,可以提高定位精度。
The node localization is one of the key technologies in wireless sensor network. The centroid algorithm localization means that node self-localization relies on wireless sensor network connectivity, but error is large. In order to improve positioning precision, an optimization weighted centroid localization algorithm based on RSSI was presented in consideration of less affection by environment for centroid localization algorithm, and easy to use localization technology based on RSSI. Distance was got through RSSI, combined with optimization weighted centroid algorithm, node was located. Simulation results show that, the average error of positioning decreased, and localization precision was improved by this algorithm.
出处
《电子设计工程》
2013年第7期171-173,共3页
Electronic Design Engineering
基金
扬州市-扬州大学科技合伙资金计划项目(YZ2011149)
