| 摘要: |
| 在无线传感器网络的定位过程中,随着锚节点的使用数量增多,整个网络的开销也会增大,从而会造成较大的浪费.因此,为了实现利用较少的锚节点完成较精确定位的目标,提出了一种仅基于3个移动锚节点的Range-free无线传感器网络节点定位算法.该算法能够保证每个未知节点都选择与其距离在一定范围内的锚节点进行定位,同时,通过建立优化模型以最大化网络中的二重覆盖区域范围,从而进一步提高定位的精确度.仿真实验结果表明,该算法能够在一定程度上提高节点的定位精确度. |
| 关键词: 无线传感器网络 定位 移动锚节点 二重覆盖 |
| DOI： |
| 分类号: |
| 基金项目:Supported by the National Natural Science Foundation of China under Grant Nos.60803122, 60903130 (国家自然科学基金) |
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| A Localization Algorithm in Wireless Sensor Networks with Mobile Anchor Nodes |
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SHI Ting-Jun,SANG Xia,XU Li-Jie,YIN Xin-Chun
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| Abstract: |
| In process of the localization in WSN, the overhead of the whole network will increase with the number of anchor nodes added, and it’ll bring a lot of waste. Thus, in order to use less anchor nodes to achieve more precise localization, this paper proposes a range-free localization algorithm which is based on three mobile anchor nodes, the algorithm can guarantee that each unknown node can choose the anchor nodes which are not far away from itself to implement localization, and construct an optimization model to maximize the area of double overlay regions in the network. The results of simulation show that this algorithm can improve the precision of localization. |
| Key words: wireless sensor networks localization mobile anchor node double overlay |
