单锚节点水声网络高精度低开销初始化方法

发布时间：2018-10-05 16:00

【摘要】：网络初始化是网络协议正常运行的基础,共包括自定位及时间同步两部分。针对水声网络特点,提出一种仅采用单锚节点的参考节点自选则自定位算法,该算法仅采用一个锚节点,通过最优化选择参考节点,减小参考节点拓扑结构及网络测距误差对定位精度的影响,既有效解决了水声网络中锚节点少的问题,且提高了定位精度;在此基础上提出一种快速初始化方法,该方法将自定位与时间同步协同完成,使得网络可在较少的信息交互下快速实现初始化过程,减小通信开销及初始化时延,网络布放后可快速进入正常运行,提高网络工作效率。通过仿真得出,本文提出的方法较现有初始化方法锚节点需求少,定位精度高,初始化时延短、通信开销小,可以很好地应用于水声网络中。
[Abstract]:Network initialization is the basis of the normal operation of network protocols, including self-positioning and time synchronization. According to the characteristics of underwater acoustic networks, a self-selecting self-localization algorithm for reference nodes with only one anchor node is proposed. The algorithm uses only one anchor node and selects reference nodes through optimization. Reducing the influence of reference node topology and network ranging error on location accuracy can effectively solve the problem of fewer anchor nodes in underwater acoustic network and improve the positioning accuracy. On the basis of this, a fast initialization method is proposed. In this method, self-localization and time synchronization are coordinated, so that the network can realize the initialization process quickly with less information interaction, reduce the communication overhead and initialize delay, and the network can be put into normal operation quickly after the network is laid out. Improve the efficiency of network work. The simulation results show that the proposed method can be used in underwater acoustic networks with less requirements, higher positioning accuracy, shorter initialization delay and less communication overhead than the existing initialization methods.
【作者单位】：西北工业大学航海学院;
【基金】：国家自然科学基金(61401364) 高等学校博士学科点专项科研基金(20136102120013)资助课题
【分类号】：TN929.3

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