摘要
在海洋环境监测传感器网络中,应用改进的DV-Hop算法,提高传感器节点定位精度。该算法对原始DV-Hop算法做了两点改进,一是通过加权处理,修正定位节点平均每跳距离,由此得到更为准确的任意定位节点与锚节点的距离;二是通过泰勒级数和最速下降算法相结合,有效避免迭代不收敛的情况和三边测量法或多边测量法计算量大的缺点,减少节点运算时间,由此降低节点能量消耗。仿真验证,该算法能有效提高传感器节点的定位精度。
In this paper, a modified DV-Hop algorithm is proposed for the marine environment monitoring sensor network, which improves the positioning accuracy of the sensor. Compared with the original DV-Hop algorithm, the modified one corrects unknown nodes per hop distance and gives more accuracy of the distance from any unknown nodes and anchor nodes by the weighted processing. By making use of advantages of the Taylor series and steepest descent algorithm, disadvantages of misconvergence and large amount in the multilateral measurement method are avoided and the energy consumption of the node is reduced. The effectiveness and advantage of the modified DV-HOP algorithm is demonstrated by the numerical simulations.
出处
《控制工程》
CSCD
北大核心
2015年第5期815-819,共5页
Control Engineering of China
基金
国家自然科学基金项目(61273107
61174060)
中央高校基本研究项目国家(3132013334)
大连市领军人才支持计划项目(2012Z0036)
关键词
海洋环境监测
传感器网络
定位
精度
Marine environment monitoring
sensor network
localization
accuracy
