| 改进的无线传感器网络节点定位算法 |
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| 引用本文： | 张宏君,毛永毅.改进的无线传感器网络节点定位算法[J].计算机应用,2012,32(8):2103-2105. |
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| 作者姓名： | 张宏君 毛永毅 |
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| 作者单位： | 1. 西安邮电大学 通信与信息工程学院，西安 7100612. 西安邮电大学 电子工程学院，西安 710061 |
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| 基金项目： | 陕西省自然科学基金资助项目，陕西省教育厅专项科研项目 |
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| 摘 要： | 为了减小无线传感器网络(WSN)节点定位中非视距传播误差产生的影响，提高节点定位精度，提出一种基于残差加权的牛顿迭代定位算法。先利用残差加权算法定位，得到未知节点的初步位置，再将该节点位置作为牛顿迭代定位算法的初始值进行迭代计算，最终得到更为精确的节点位置。仿真实验结果表明，该算法能有效地抑制非视距传播误差的影响，提高传感器网络节点定位的精度，且性能稳定。
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| 关 键 词： | 无线传感器网络 定位算法 非视距 牛顿迭代 残差加权 |
| 收稿时间： | 2012-02-16 |
| 修稿时间： | 2012-03-15 |
Improved algorithm of wireless sensor network node localization |
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| ZHANG Hong-jun
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MAO Yong-yi.Improved algorithm of wireless sensor network node localization[J].journal of Computer Applications,2012,32(8):2103-2105. |
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| Authors: | ZHANG Hong-jun MAO Yong-yi |
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| Affiliation: | 1. School of Telecommunication and Information Engineering, Xi'an University of Posts and Telecommunications, Xi'an Shaanxi 710061, China2. School of Electronic Engineering, Xi'an University of Posts and Telecommunications, Xi'an Shaanxi 710061, China |
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| Abstract: | In order to eliminate the influence of Non-Line-Of-Sight(NLOS) transmission error in wireless sensor network node localization,and solve the problem of possible convergence in the Newton iterative algorithm,a Newton iterative localization algorithm based on the weighted residual was proposed.First,residual weighting algorithm was used for positioning to get the unknown node’s preliminary position,then the node position was used as an initial value to iterate and calculate in Newton iterative localization algorithm,finally the precise position of the unknown node was obtained.The simulation results show that this algorithm can effectively restrain the effect of NLOS propagation error,improve the precision of sensor network node localization,and has stable performance. |
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| Keywords: | Wireless Sensor Network(WSN) localization algorithm Non-Line-Of-Sight(NLOS) Newton iteration weighted residual |
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