Science China Information Sciences

, 54:2349

Sequence-based localization algorithm with improved correlation metric and dynamic centroid

  • Ying Yu
  • ChunXiao Jiang
  • XiaoJie Zhao
  • LiJun Yun
  • ZhiHua Li
  • Yong Ren
Research Papers

DOI: 10.1007/s11432-011-4434-1

Cite this article as:
Yu, Y., Jiang, C., Zhao, X. et al. Sci. China Inf. Sci. (2011) 54: 2349. doi:10.1007/s11432-011-4434-1

Abstract

Ecolocation (error controlling localization technique) is a novel sequence-based RF localization algorithm. A key feature of the Ecolocation algorithm is that it constructs a constraint table based on RSSI values and compares data between two tables. However, the definitions of the constraint and the centroid in the Ecolocation algorithm are imperfect, and result in poor localization performance. To improve the localization accuracy, a new algorithm based on weighted rank order correlation coefficient and dynamic centroid method is proposed. Simulation results indicate that compared with the Ecolocation, the localization accuracy and robustness of the new algorithm are distinctly raised.

Keywords

WSNs (wireless sensor networks)localization sequencesconstraint tablerank order correlation coefficient

Copyright information

© Science China Press and Springer-Verlag Berlin Heidelberg 2011

Authors and Affiliations

  • Ying Yu
    • 1
  • ChunXiao Jiang
    • 2
  • XiaoJie Zhao
    • 2
  • LiJun Yun
    • 1
  • ZhiHua Li
    • 2
  • Yong Ren
    • 2
  1. 1.College of InformationYunnan Normal UniversityKunmingChina
  2. 2.Department of Electronic EngineeringTsinghua UniversityBeijingChina