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Alternative TitleResearch on Node Localization Algorithms for Underwater Wireless Sensor Networks
Thesis Advisor谭民 ; 王硕
Degree Grantor中国科学院研究生院
Place of Conferral中国科学院自动化研究所
Degree Discipline控制理论与控制工程
Keyword水下传感器网络 静态节点定位 移动节点定位 水下锚节点定位 系统体系结构 Underwater Wireless Sensor Networks Node Localization Of Static Wsns Node Localization Of Mobile Wsns Anchor Localization Of Underwater Wsns System Architecture
Abstract随着无线通信、集成电路、传感器以及微电子机械系统等技术的飞速发展和日益成熟,使得低成本、低功耗、大规模的无线传感器网络的产生与发展成为可能。在传感器网络中,节点位置信息对整个网络的监测活动至关重要,在其诸多应用中扮演着不可或缺的重要角色。如何设计高效率、高精度、低能耗的定位算法一直都是传感器网络研究中的热点问题。本文在国家自然科学基金重点项目“水下移动传感器网络关键技术研究”的资助下,对水下传感器网络中的节点定位问题做了系统和深入的研究。主要内容如下: 首先,介绍了水下传感器网络的研究背景,综述了传感器网络中静态节点和移动节点的定位方法研究现状,并对论文结构作了介绍。 其次,针对水下静态网络的节点定位问题,提出了一种利用1-hop节点之间的距离和相对角度信息进行无线传感器网络定位的递推算法(IPARA),为避免定位误差的累积,对IPARA进行了优化,分别提出了基于集中式优化策略的IPARA算法(IPARA-GO)和基于分布式优化策略的IPARA算法(IPARA-DO)。 第三,在移动网络中,研究了网络中无锚节点和有锚节点两种情况下的移动节点定位问题,分别提出了基于运动模型的节点定位方法和事件驱动的节点定位方法。 第四,针对水下锚节点的定位问题,提出了一种锚节点的层次型分布方法,根据水域的长宽深参数,计算所需锚节点的层数和每层锚节点的数目,并提出了一种分布式定位算法利用水面上浮标的位置信息计算各层锚节点的位置。 第五,设计并开发了一个节点定位方法的仿真实验平台,通过改变仿真实验中的不同参数,实现了各种定位方法的性能比较。 最后,对所开展的工作进行了总结,并指出了需要进一步研究的工作。
Other AbstractRecent advances in wireless communication, integrated circuit, sensor technology and MEMS have made it possible to deploy large scale wireless sensor networks (WSNs) by using low-cost and low-power sensor nodes. In emerging WSNs applications, it is necessary to accurately position the nodes where their reported data are geographically meaningful. In WSNs, how to design a fast converging and low-cost method to accurately estimate the locations of the nodes, is always an active area. Supported by the key project of NSFC (National Science Foundation of China), this paper focuses on the localization algorithms of static and mobile underwater sensor networks. And the contents are as below. Firstly, the background of underwater sensor networks is described. The research progress of localization algorithms about static and mobile underwater sensor networks is given. The paper structure is also introduced. Secondly, iterative positioning algorithm based on range and relative angle between nodes (IPARA) is proposed. In order to reducing the positioning error, the optimization algorithm is integrated into IPARA, and the algorithms with global optimization (IPARA-GO) and distributed optimization (IPARA-DO) are presented. Thirdly, the algorithm based on the nodes’ mobility is proposed to position the mobile nodes in the underwater sensor networks without anchors. And event-driven algorithm for mobile node localization is presented when the network contains some anchors. Fourthly, a layered anchor node distribution method is proposed to deploy the anchor nodes in the water. The layer number and the anchor node number in each layer are calculated according to the length, width and depth of the concerned area. Fifthly, a simulation platform is developed to test the performance of the proposed localization algorithms under different network parameters. Finally, the conclusions are given and future work is addressed.
Other Identifier200718014628007
Document Type学位论文
Recommended Citation
GB/T 7714
郝志凯. 水下传感器网络节点定位算法研究[D]. 中国科学院自动化研究所. 中国科学院研究生院,2010.
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