东北大学学报:自然科学版 ›› 2019, Vol. 40 ›› Issue (10): 1381-1385.DOI: 10.12068/j.issn.1005-3026.2019.10.003

• 信息与控制 • 上一篇    下一篇

基于半定规划的无线传感器网络节点定位算法

武刚1,2, 吴成东1   

  1. (1. 东北大学 信息科学与工程学院, 辽宁 沈阳110819; 2. 沈阳大学 信息工程学院, 辽宁 沈阳110044)
  • 收稿日期:2018-12-19 修回日期:2018-12-19 出版日期:2019-10-15 发布日期:2019-10-10
  • 通讯作者: 武刚
  • 作者简介:武刚(1978-),男,辽宁丹东人,东北大学博士研究生; 吴成东(1960-),男,辽宁大连人,东北大学教授,博士生导师.
  • 基金资助:
    国家重点研发计划项目(2017YBF1300900); 国家自然科学基金资助项目(61973063); 国家自然科学基金与深圳市联合基金资助项目(U1713216).

Location Algorithm of Wireless Sensor Network Nodes Based on Semi-definite Programming

WU Gang1,2, WU Cheng-dong1   

  1. 1. School of Information Science & Engineering, Northeastern University, Shenyang 110819, China; 2. School of Information Engineering, Shenyang University, Shenyang 110044, China.
  • Received:2018-12-19 Revised:2018-12-19 Online:2019-10-15 Published:2019-10-10
  • Contact: WU Gang
  • About author:-
  • Supported by:
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摘要: 针对无线传感器网络节点定位,在最大似然估计(MLE)基础上提出了一种半定规划(SDP)的优化算法.结合有效的锚节点位置选择和比率范围设定,在放宽非凸约束的基础上,采用SDP求解算法,有效减少了误差的影响,得到被测节点的实际位置.改变锚节点的位置可以有效解决锚节点凸壳外的节点位置估计不精准问题.仿真结果表明,提出的SDP算法对未知节点的位置实现了高精度定位,改进了凸优化方法.

关键词: 无线传感器网络, 半定规划, 最大似然估计, 估计位置, 锚节点

Abstract: Aiming at node localizations of wireless sensor network(WSN), a semi-definite programming(SDP)optimization algorithm based on the maximum likelihood estimation(MLE)was proposed. Combining the effective anchor node position selection and ratio range setting, the SDP algorithm was used to relax the non-convex constraints, effectively reduce the impact of errors and get the actual position of measurement nodes. Changing the position of the anchor node can effectively solve the problem of inaccurate estimation of nodes outside the convex hull of the anchor node. The simulation results showed that the proposed SDP algorithm achieves high-precision in the position estimation of unknown nodes, and improves the convex optimization method.

Key words: wireless sensor network, semi-definite programming, maximum likelihood estimation, estimated position, anchor node

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