摘要
提出了一种无精准同步的小规模水声网络节点相对自定位方法。针对节点数量较少的小规模水声网络,利用水声通信在无精准时钟同步的情况下进行节点间测距,进而根据由相邻节点构成的三角形结构校正节点的相对位置。通过仿真得到,在几种典型拓扑结构下,该方法在测距误差不超过10 m时,将初始定位误差降低40%以上。在水声网络自组织的同时进行节点自定位,避免了传统的二次定位过程,节省了节点能耗和定位时间,并在一定范围内提高了定位精度。
A relative self-positioning method for small-scale underwater acoustic network nodes without precise synchronization is proposed.Aiming at small-scale underwater acoustic network with few quantity of nodes,the distances between two nodes are ranged by underwater communication without precise synchronization.The position of each node is corrected according to the distances of triangles made up of adjacent nodes.In simulation of several typical topologies,when the ranging error is less than 10 m,the initial positioning error is reduced by more than 40%.Relative selfpositioning during the self-organization of underwater acoustic network can avoid the traditional secondary positioning process,save energy consumption and time of positioning,improve the positioning accuracy to a certain extent.
作者
冯艺璇
肖东
陈岩
魏丽萍
郭圣明
FENG Yixuan;XIAO Dong;CHEN Yan;WEI Liping;GUO Shengming(Key Laboratory of Underwater Acoustic Environment,Chinese Academy of Sciences,Beijing 100190;Institute of Acoustics,Chinese Academy of Sciences,Beijing 100190;University of Chinese Academy of Sciences,Beijing 100049)
出处
《声学学报》
EI
CSCD
北大核心
2020年第4期486-496,共11页
Acta Acustica
基金
国家自然科学基金项目(61302109)
中国科学院声学研究所青年英才计划(QNYC201702)资助。
