摘要
节点定位是无线传感器网络应用的关键技术,通过对无线传感器网络中DV-Hop节点定位算法及影响算法定位性能因素的分析与研究,提出的一种新的改进方法,即采用基于角度阈值的锚节点选择策略,有选择性的选取锚节点参与三边定位过程,对平均每跳距离的计算进行改进,并通过引入角度加权因子对其定位结果进行修正。仿真结果表明,改进后的算法有效提高了节点的覆盖率和定位精度。
The node localization is the wireless sensor network application key technologies, through the wireless sensor network in the DV-Hop node localization algorithm and the influence algorithm localization performance factor＇s research, a new corrective method is proposed. It is based on the angle threshold value anchor node choice strategy, has the selective selection anchor node participation trilateral localization process, makes the improvement every time equally to the jumping distance＇s computation, and carries on the revision through the introduction angle weighting factor to its localization result. The simulation result indicats that after the improvement algorithm the node coverage fraction and the pointing accuracy are raised effectively.
出处
《自动化技术与应用》
2012年第6期18-20,28,共4页
Techniques of Automation and Applications
基金
黑龙江省教育厅2010年度科学技术研究(面上)项目计划(编号11551347)
关键词
DV-HOP
定位算法
角度阈值
加权因子
DV-HOP
localization algorithm
angle threshold value
weighting factor
