基于定位导航系统的改进无线节点空间定位算法 |
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引用本文: | 陈戈,张铮,李振波,陈佳品.基于定位导航系统的改进无线节点空间定位算法[J].半导体光电,2015,36(4):618-621. |
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作者姓名: | 陈戈 张铮 李振波 陈佳品 |
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作者单位: | 上海交通大学电子信息与电气工程学院,上海,200240;上海交通大学电子信息与电气工程学院,上海,200240;上海交通大学电子信息与电气工程学院,上海,200240;上海交通大学电子信息与电气工程学院,上海,200240 |
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基金项目: | 国家自然科学基金项目(61175100,51275285); 上海交通大学医工交叉基金项目(YG2011ZD01); 中国博士后基金项目(2012M510087) |
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摘 要: | 提出了一套针对无线节点空间定位的修正算法.首先提出了一种抽样后求点估计的方法,消除了GPS信息误差造成的影响,然后通过分治法的策略来选取锚节点,保证锚节点的可靠性,普通节点可以通过锚节点与本身进行定位求概率分布,继而修正拓扑,最后通过一个竞争机制来进行有序的网络拓扑坐标修正.实际测试达到了预期的效果.通过该算法,可以在较低功耗下将无线传感网络的定位精度提高,使得无线传感网络能够适应高定位精度的要求.
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关 键 词: | 无线传感网络 定位算法 锚节点 分治法 |
收稿时间: | 2014/10/28 0:00:00 |
An Improved Spatial Localization Algorithm in WSN Based on GPS |
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Abstract: | In this paper, it proposes a correction algorithm for wireless node spatial location. Firstly, a point estimation method was presented after GPS data sampling so as to eliminate the influence of errors caused by the GPS information. Secondly, the anchor nodes were selected through the divide-and-conquer method to ensure the reliability. Route nodes can correct their topology through positioning with anchor nodes and the probability distribution can be calculated. Finally, a competitive mechanism is mentioned to coordinate the correction of the network topology of whole WSN. The actual test achieves the anticipate goal. This algorithm can improve the accuracy of WSN positioning with a low power consumption, and WSNs can adapt to high positioning accuracy. |
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Keywords: | WSN localization algorithm anchor node divide-and-conquer method |
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