Improvement of Centroid Location Algorithm for Wireless Sensor Networks
作者单位：School of Electronics and Information Engineering Liaoning Technical University
会议名称：《2011 International Conference on Computer Science and Information Technology(ICCSIT 2011)》
会议日期：2011年
学科分类：080904[工学-电磁场与微波技术] 0810[工学-信息与通信工程] 0809[工学-电子科学与技术（可授工学、理学学位）] 080202[工学-机械电子工程] 08[工学] 080402[工学-测试计量技术及仪器] 0804[工学-仪器科学与技术] 081001[工学-通信与信息系统] 0802[工学-机械工程]
关 键 词：wireless sensor networks location algorithm unknown nodes.
摘 要：In this paper, the radio propagation path loss is analyzed and the previous weighted centroid location algorithm is improved. The weighted factor in the algorithm is optimized, which makes positioning error and positioning accuracy of the unknown nodes better. Firstly, the paper uses three-point location to calculate location of unknown nodes approximately. Secondly, the paper uses a modified weighted centroid location algorithm to calculate the unknown nodes precisely. Finally, the algorithm is simulated. Compared to the previous weighted centroid localization algorithm, the simulation results show that the improved centroid positioning algorithm has better positioning performance.