欢迎访问《空军工程大学学报》官方网站!

咨询热线:029-84786242 RSS EMAIL-ALERT
室内非视距环境下基于改进多维标度的优化定位算法
DOI:
作者:
作者单位:

作者简介:

通讯作者:

中图分类号:

TP915.9

基金项目:

国家自然科学基金(61403414),陕西省自然科学基础研究计划(2016JQ6070),博士后科学基金(2016M603042)


An Optimization Localization Algorithm for Indoor NLOS Environment Based on Improved MDS-MAP
Author:
Affiliation:

Fund Project:

  • 摘要
  • |
  • 图/表
  • |
  • 访问统计
  • |
  • 参考文献
  • |
  • 相似文献
  • |
  • 引证文献
  • |
  • 资源附件
  • |
  • 文章评论
    摘要:

    研究了室内非视距环境下无线传感器网络的节点定位问题。在优化估计框架下,首先提出待优化误差函数,并基于改进多维标度(MDS-MAP)方法,分析误差函数中未知变量的耦合关系,最后提出基于改进MDS-MAP的优化定位算法。该算法仅依靠节点间的测距信息进行定位,无需环境先验信息, 因此适用于未知、复杂环境下的无线传感器网络。同时该算法无需角度、信号强度等冗余量测信息来辅助定位,对硬件要求较低,从而降低了定位成本。通过仿真比较,所提出的基于改进MDS-MAP的优化定位算法的有效性得以验证。在仿真过程中,采用聚类分析方法对不同基站数目下的节点定位精度进行分析。根据仿真结果,在节约定位成本的前提下,当基站数目达到6个时,能够实现三维空间近似最优定位。

    Abstract:

    This paper studies the localization problem of Wireless Sensor Network (WSN) in Indoor Non Line of Sight (NLOS) environment. Under condition of the optimization estimation framework, an error function to be optimized is firstly proposed, and then based on advanced Multidimensional Scaling-MAP (MDS-MAP) method, the coupling relationship among the unknown variables is analyzed, and finally an optimization localization algorithm based on improved MDS-MAP is designed. Without any prior environmental knowledge, the proposed algorithm can be conducted merely with distance information suitable for WSN in unknown and complex environment. Simultaneously, the algorithm does not need any redundant information (e.g. angle and signal strength), thus possessing the properties of low hardware requirement and low cost. The effectiveness of the proposed algorithm are illustrated through several simulations examples. And the clustering analysis method is adopted to analyze the localization precision with different numbers of basis stations. According to the simulation results, the approximate optimal localization results with low cost are reached in 3-dimensional space when the number of the basis stations is six.

    参考文献
    相似文献
    引证文献
引用本文

贾丹,李卫华,王鹏.室内非视距环境下基于改进多维标度的优化定位算法[J].空军工程大学学报,2017,18(3):66-72

复制
分享
文章指标
  • 点击次数:
  • 下载次数:
  • HTML阅读次数:
  • 引用次数:
历史
  • 收稿日期:
  • 最后修改日期:
  • 录用日期:
  • 在线发布日期: 2017-07-07
  • 出版日期: