| 基于二次栅格扫描的无线传感器网络定位算法 |
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| 引用本文： | 彭爱平,郭晓松,蔡伟,徐晓淼.基于二次栅格扫描的无线传感器网络定位算法[J].传感技术学报,2009,22(11). |
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| 作者姓名： | 彭爱平 郭晓松 蔡伟 徐晓淼 |
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| 作者单位： | 彭爱平,郭晓松,蔡伟(第二炮兵工程学院,西安,710025);徐晓淼(第二炮兵驻211厂军事代表室,北京,100076) |
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| 摘 要： | 为了提高无线传感器网络的定位精度,在栅格扫描算法的基础上提出了一种基于二次栅格扫描的无线传感器网络定位算法.利用未知节点与两跳范围内的锚节点的连通性约束信息,在近节点对未知节点进行栅格扫描得到其初始位置估计的基础上,引入远节点对未知节点再次进行栅格扫描,从而提高定位精度.算法增加了远节点栅格扫描的计算量,但不需要额外地增加节点的硬件功能.仿真结果表明,与仅利用近节点的栅格扫描算法相比,该算法在锚节点密度增大的过程中可以更快地提高定位精度.
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| 关 键 词： | 无线传感器网络 定位 栅格扫描 连通性约束 |
A Localization Algorithm for Wireless Sensor Networks Based on Twice Grid Scan |
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| PENG Aiping,GUO Xiaosong,CAI Wei,XU Xiaomiao.A Localization Algorithm for Wireless Sensor Networks Based on Twice Grid Scan[J].Journal of Transduction Technology,2009,22(11). |
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| Authors: | PENG Aiping GUO Xiaosong CAI Wei XU Xiaomiao |
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| Affiliation: | PENG Aiping1,GUO Xiaosong1,CAI Wei1,XU Xiaomiao2 1.The Second Artillery Engineering College,Xi'an 710025,China,2.Military Representatives Office of the Second Artillery in No.211 Factory,Beijing 100076 |
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| Abstract: | To improve the accuracy of localization algorithm,a twice grid scan node localization algorithm for wireless sensor networks is proposed on the basis of grid scan localization algorithm.By using the connectivity constraints between unknown nodes and anchor nodes within two hops range of unknown nodes,an unknown node's initial estimated location is obtained through grid scans by the unknown node's near anchors,and the localization accuracy is improved through grid scans by the unknown node's farther anchors.... |
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| Keywords: | wireless sensor network localization grid scan connectivity constraint |
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