摘要
针对无线传感器网络节点应用传统DV-Hop定位算法时存在最小跳数值误差和平均跳距误差较大的问题,提出了基于多通信半径最小跳数优化与跳距加权修正的DV-Hop定位算法。采用锚节点通信半径多级数分层的方法,减少了未知节点最小跳数选取的误差。通过加权平均跳距的方式进一步降低了因不规则网络拓扑结构导致的锚节点与未知节点之间距离计算的误差。最后,未知节点通过最小二乘法计算自身坐标。MATLAB仿真结果表明,通过对上述2个步骤的改进,在多种模拟环境中提出的DV-Hop定位算法相较传统DV-Hop算法及有关文献算法具有更高的定位精度。
To address the issues of significant errors in minimum hop number selection and average hop distance estimation when applying the traditional DV-Hop localization algorithm in wireless sensor network nodes,an improved DV-Hop localization algorithm is proposed incorporating multi-communication radius hop optimization and hop distance weighted correction.Firstly,by dividing communication radius into hierarchical layers,the error in minimum hop number selection is reduced.Subsequently,the hop distance weighted method is implemented to further mitigate distance calculation errors between the anchor nodes and unknown nodes caused by irregular network topologies.Finally,the unknown nodes calculate their coordinates using the least squares method.MATLAB simulation results demonstrated that through these two-step improvements,the proposed DV-Hop algorithm achieves higher localization accuracy compared with the traditional DV-Hop algorithms and related methods across various simulated environments.
作者
张烈平
黄自晨
尹亚梦
谭铭扬
王守峰
ZHANG Lieping;HUANG Zichen;YIN Yameng;TAN Mingyang;WANG Shoufeng(School of Mechanical and Electrical Engineering,Guilin University of Aerospace Technology,Guilin 541004,China;Key Laboratory of Advanced Manufacturing and Automation Technology(Guilin University of Technology),Education Department of Guangxi Zhuang Autonomous Region,Guilin 541006,China;Department of Electrical and Electronic Engineering,Nanning Branch of Guilin University of technology,Nanning 532100,China)
出处
《科技导报》
北大核心
2025年第16期114-119,共6页
Science & Technology Review
基金
国家自然科学基金项目(61741303)
广西空间信息与测绘重点实验室基金项目(21-238-21-16)。
关键词
DV-HOP定位算法
最小跳数优化
平均跳距加权
DV-Hop localization algorithm
minimum hop optimization
average hop distance weighting
