船舶传感器网络中节点定位算法设计

Design of node location algorithms in ship sensor networks

节点定位对于船舶传感器网络具有十分重要的意义,没有节点位置的信息是无用的,经典的船舶传感器网络节点定位算法—DV-hop算法存在定位误差大、速度慢等问题。为了提高船舶传感器网络节点定位结果,设计了改进DV-hop算法的船舶传感器网络节点定位算法。首先对当前船舶传感器网络节点定位算法的研究现状进行分析,找到引起DV-hop算法定位误差大、速度慢的原因,然后采用传感器网络发射信号强度得到节点之间的距离,在此基础上采用DV-hop算法进行船舶传感器网络节点定位,最后进行船舶传感器网络节点定位实验,实验结果表明,本文算法克服了当前船舶传感器网络节点定位误差大的缺陷,其船舶传感器网络节点定位精度不仅明显高于DV-hop算法,而且船舶传感器网络节点所耗费的时间更少,获得了整体效果更佳的船舶传感器网络节点结果。

Node localization is of great significance to ship sensor networks.Information without node location is useless.The classical DV-hop algorithm for ship sensor network node localization has some problems,such as large fixed error and slow speed.In order to improve the localization effect of ship sensor network nodes,an improved DV-hop algorithm for ship sensor network node localization is designed.Firstly,the current research status of ship sensor network node localization algorithm is analyzed,and the causes of the large fixed error and slow speed of DV-hop algorithm are found.Then,the distance between nodes is obtained by the intensity of signal transmitted by sensor network.On this basis,the DV-hop algorithm is used to locate ship sensor network node.Finally,the ship sensor network node localization is carried out.Experiments show that the proposed algorithm overcomes the shortcomings of large positioning errors in current ship sensor network nodes.The positioning accuracy of ship sensor network nodes is significantly higher than that of DV-hop algorithm,and the time consumed by ship sensor network nodes is less,and the overall effect of ship sensor network nodes is better.