面向东海-南海海流观测的大规模三维移动传感器网络关键技术研究

Large-scale three-dimensional mobile sensor network for ocean current observation in East China Sea and South China Sea plays an important role for stereo observation of the ocean, which can improve the deep-sea detection ability of China and satisfy the national strategic aim of building an ocean power. This project focuses on the following tasks: (1) New architecture of three-dimensional sensor networks will be designed by comprehensively considering various aspects,such as the characteristics of the observed sea area, requirements of data sampling, localization methods of nodes, and deployment costs.(2) Since the mobility of underwater mobile nodes is closely related to the current,a new mobility model will be proposed where the positions of nodes can be predicted by the oean current model HYCOM. This will help resolving the energy-effecient problems in both localization and topology control.(3) Due to the unique characteristics of underwater acoustic channels, it is quite challenging to get accurate ranging between underwater nodes, a range-free silent localization method will be studied with sparse anchor nodes.(4) The continuous connectivity among nodes can not be guaranteed because of the mobility of nodes. New dynamic topology control algorithms will be investigated based on time-space diagram. The key technologies of large-scale three-dimensional mobile sensor networks for ocean current observation will be obtained as the outcomes of this project. In addition, this project will advance both theoretical study and applied technology in this area to international advanced level.

面向东海、南海海域海流观测的大规模三维移动传感器网络是实现我国对海洋的立体观测，特别是提升对深海大洋的探测能力、服务于建设海洋强国这一国家重大战略部署的重要手段。本项目主要研究：（1）根据观测海域特点、数据采集要求，并综合考虑节点定位方式、经济成本等因素的影响，建立面向海流观测的三维移动传感器网络系统结构模型。（2）根据负责数据采集的水下移动节点的运动模式与海流密切相关的特点，提出用海洋环流模式HYCOM预测移动节点的位置，帮助解决定位和拓扑控制中的能量高效问题。（3）针对水声信道固有特征导致水下节点间难以精确测距的问题，研究稀疏锚节点下不基于测距的水下移动节点被动定位算法。（4）针对节点移动导致节点间无法保证持续连通性的问题，研究基于时空图的动态拓扑控制算法。通过本项目的研究，掌握面向海流观测的大规模三维移动传感器网络中的关键技术，使得该项目的理论研究和应用技术处于国际先进水平。

面向东海、南海海域海流观测的大规模三维移动传感器网络是实现我国对海洋的立体观测，特别是提升对深海大洋的探测能力、服务于建设海洋强国这一国家重大战略部署的重要手段。本项目主要研究：（1）根据观测海域特点、数据采集要求，并综合考虑节点定位方式、经济成本等因素的影响，建立面向海流观测的三维移动传感器网络系统结构模型。（2）针对水声信道固有特征导致水下节点间难以精确测距的问题，研究稀疏锚节点下不基于测距的水下移动节点被动定位算法。（3）针对节点移动导致节点间无法保证持续连通性的问题，研究基于时空图的动态拓扑控制算法。（4）根据负责数据采集的水下移动节点的运动模式与海流密切相关的特点，提出用海洋环流模式预测移动节点的位置，帮助解决定位和拓扑控制中的能量高效问题。通过本项目的研究，掌握了面向海流观测的大规模三维移动传感器网络中的关键技术，使得该项目的理论研究和应用技术处于国际先进水平。