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Research on Localization Algorithm for Wireless Sensor Network in Three-Dimensional Space

Author: LiSiZuo
Tutor: QiRongBin
School: East China University of Science and Technology
Course: Control Science and Engineering
Keywords: Wireless sensor networks Node three-dimensional positioning Distributed Algorithms Bee Colony Algorithm Path planning
CLC: TN929.5
Type: Master's thesis
Year: 2012
Downloads: 77
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Abstract


In recent years, the rapid development of wireless sensor network technology is widely used in the fields of environment, military, security, industrial and household. As one of the basic technologies of wireless sensor networks, the positioning of the sensor nodes is more and more to get people's attention. Wireless sensor networks in two-dimensional plane node localization mature, but the more complex problem of node localization in three-dimensional space, the results were not enough, still need further investigation. Therefore, the proposed high-precision, high-efficiency, low computational complexity, node a small amount of communication data, and more suitable for a distributed architecture 3D node localization algorithm imminent. Network topology in three-dimensional space of wireless sensor networks based on a distributed algorithm based on ranging - high-precision iterative three-dimensional localization algorithm (ILAH-3D), wireless sensor networks to meet the three-dimensional space applications node localization requirements. ILAH-3D relies more on the characteristics of the initial anchor nodes using a mobile anchor node instead of anchor nodes, combined bee colony algorithm, a new path planning method - ILAH-3D path. The article also ILAH-3D algorithms and the availability and performance of the path ILAH-3D simulation results further verification and examine. The main work of this paper include: (1) ILAH-3D algorithm for wireless sensor network node positioning problem of three-dimensional space. Algorithm inherits the classic two-dimensional node localization algorithm a AHLOS algorithm framework, and extended to three-dimensional space to improve. ILAH-3D is based on ranging anchor node information to locate the unknown nodes, high accuracy; introduced weighted ideas to improve the method of least squares, to reduce the impact of ranging error; propose a vector-based node coordinates method for solving low computational complexity and reduces the computational complexity of the algorithm; uses distributed computing node communication; collaborative and iterative approach to improve the utilization of the anchor node. Simulation results verify the ILAH-3D algorithm positioning effect better, not only to the high proportion of node localization, and a high degree of accuracy. (2) instead of a fixed anchor node ILAH-3D characteristics of the algorithm depends on the initial anchor nodes, using mobile anchor node method to improve the anchor node utilization, reduce system cost. In order to improve the efficiency of the mobile anchor node, to shorten the path length of its run, to design a mobile anchor node directly by treatment positioning node positioning method, the positioning accuracy and the range of error in the controllable range. (3) on the basis of the mobile anchor node localization method designed ILAH-3D path bee colony algorithm for optimal traversal path. Simulation experiments show, ILAH-3D can not only complete the path towards positioning node traversal, positioning, and ILAH-3D algorithm needs network environment, the path length Jiaoyou bee colony algorithm to handle the problem of outstanding performance.

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