基于角度阈值的改进型DV-Hop定位算法  

Improved DV-Hop Positioning Algorithm Based on Angle Threshold

作　　者：杨磊[1] 张政保[1] 谢桂海[1] 明亮[1] 王新锋[1] 

机构地区：[1]军械工程学院计算机工程系,石家庄050003

出　　处：《计算机工程》2008年第20期96-97,100,共3页Computer Engineering

基　　金：国家自然科学基金资助项目(60372042)

摘　　要：针对DV-Hop定位算法中部分参与定位的锚节点位置近似成直线而引起的定位性能较低的问题,提出一种基于角度阈值的锚节点选择策略,通过设置角度阈值来筛选锚节点以提高DV-Hop的定位性能。仿真结果证明,ATDV-Hop算法在可定位节点比例上比DV-Hop算法提高了24.05%,在定位精度上降低了8.79%。In order that the coordinate of some anchor nodes which join in positioning may be close to a line, the position capability of DV-Hop is lower. This paper puts forward a positioning algorithm based on angle threshold, which can set the angle threshold to filter out the anchor nodes and improve DV-Hop＇s positioning capability. Compared with DV-Hop, simulation shows that the improvement of ATDV-Hop on the proportion of enable-positioning nodes is 24.05% and the positioning precision is 8.79%.

关 键 词：普适计算 无线传感器网络 定位 DV-HOP算法 ATDV-Hop算法 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]