An Investigation on the Effects of New Reference Node Addition on the location Estimation Improvement in Positioning Systems

Document Type : Original Article

Authors

1 PhD Student, Faculty of Electrical and Computer Engineering, Shiraz University, Shiraz, Iran

2 Professor, Faculty of Electrical and Computer Engineering, Shiraz University, Shiraz, Iran

Abstract

In a location estimation system, the deployment of reference nodes significantly affects the
accuracy of estimating the location of the desired points. In this paper, it is assumed that the
location system is equipped with a number of reference nodes in a specified arrangement, and
the goal is to add a number of new reference nodes to improve the location estimation accuracy
of a desired emitting node. In this network, the location of an emitting node is estimated by
measuring the distances to the reference nodes. An algorithm is proposed to find the optimal
place of the new added reference nodes using the frame theory. The basis of this algorithm is to
arrange the new reference nodes without changing the location of the present reference nodes in
the system in such a way that the determinant of the Fisher information matrix is maximized.
The simulation results verify the efficiency of the proposed algorithm in the optimal deployment
of new reference nodes.

Keywords


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Volume 9, Issue 1 - Serial Number 25
September 2021
Pages 97-106
  • Receive Date: 28 May 2021
  • Revise Date: 02 October 2021
  • Accept Date: 14 December 2021
  • Publish Date: 23 August 2021