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无线传感器网络中一种改进的分布式加权多维尺度定位算法 被引量：3

An optimized distributed weighted multidimensional scaling localization algorithm in wireless sensor network
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摘要 本文在无线传感器网络单跳定位误差分析的基础上,分析了多跳节点定位误差的特性,并据此提出针对分布式加权多维尺度定位(Distributed Weighted Multidimensional Scaling,dwMDS)的权值优化算法。在无法获知参考点确切误差的情况下,利用分析出来的克拉美劳下限代替参考点误差并与距离测量误差合并,更准确的反映了多跳定位中的点与点之间的误差,从而有助于设计更优化的权值。仿真结果表明,使用优化权值改进的算法得到的节点定位误差明显减小。 Based on the error analysis of the one-hop localization in wireless sensor network, Cramer-Rao Lower Bound （CRLB） under Gaussian and log-normal models is derived in multihop circumstances. An improved weighted algorithm is introduced to optimize current localization system-dwMDS （Distributed Weighted Multidimensional Scaling）. CRLB data is reused in the weighted computation by merging it into the weighted function of the positioning system. The simulation has validates our efficient and more accurate method.
作者 温立 胡波
机构地区 复旦大学电子工程系
出处 《电路与系统学报》 CSCD 北大核心 2009年第4期1-7,共7页 Journal of Circuits and Systems
关键词 多跳传感器网络 定位误差 Cramer-Rao LOWER Bound(CRLB) MDS wireless sensor network Cramer-Rao Lower Bound （CRLB） MDS
分类号 TN393 [电子电信—物理电子学]
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参考文献11

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同被引文献20

  • 1王福豹,史龙,任丰原.无线传感器网络中的自身定位系统和算法[J].软件学报,2005,16(5):857-868. 被引量：672
  • 2周正.无线传感器网络的节点自定位技术[J].中兴通讯技术,2005,11(4):51-56. 被引量：36
  • 3余义斌,曹长修,李昌兵.基于权重重心法的传感器网络节点定位[J].计算机仿真,2007,24(6):296-300. 被引量：10
  • 4Want R, Falcao V, Gibbons J.The active badge location system[J]. ACM Transactions on Information Systems, 1992,10(1 ) :91-102.
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  • 6Zhang Y J, Gao K.Analysis and simulation of positioning algorithms in ad-hoc wireless local area networks[C]//Proceedings of the 7th International Conference on Machine Learning and Cybernetics, Kunming, China, 2008 : 2264-2268.
  • 7Patwari N, Ash J N, Kyperountas S, et al.Locating the nodes: Cooperative localization in wireless sensor networks[J].IEEE Signal Processing Magazine,2005,22(4) :54-69.
  • 8沈明玉,张寅.基于改进的平均跳距和估计距离的DV-Hop定位算法[J].计算机直用研究,2011,28(2):648-650.
  • 9Chen Hongyang, Sezaki k, Deng Ping, et al. An improved DB - Hop localization algorithm for wireless sensor net- works[ C ].//3rd IEEE Conference on Industrial Elec- tronics and Applications ,2008 : 1557 - 156.
  • 10李建中,高宏.无线传感器网络的研究进展[J].计算机研究与发展,2008,45(1):1-15. 被引量：440

引证文献3

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电路与系统学报
2009年 第4期

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