Hybrid TOA/AOA geometrical positioning schemes for mobile location

Chien Sheng Chen, Szu Lin Su, Yih Fang Huang

Research output: Contribution to journalArticlepeer-review

25 Citations (Scopus)


In this paper we present hybrid positioning schemes that combine time of arrival (TOA) and angle of arrival (AOA) measurements from only two base stations (BSs) to locate the mobile station (MS) in non-line-of-sight (NLOS) environments. The proposed methods utilize two TOA circles and two AOA lines to find all the possible intersections to locate the MS without requiring a priori information about the NLOS error. The commonly known Taylor series algorithm (TSA) and the hybrid lines of position algorithm (HLOP) have convergence problems, and the relative positioning between the MS and the BSs greatly affects the location accuracy. The resulting geometry creates a situation where small measurement errors can lead to significant errors in the estimated MS location. Simulation results show that the proposed methods always perform better than TSA and HLOP for different levels of NLOS errors, particularly when the MS/BSs have an undesirable geometric layout.

Original languageEnglish
Pages (from-to)396-402
Number of pages7
JournalIEICE Transactions on Communications
Issue number2
Publication statusPublished - 2009 Feb

All Science Journal Classification (ASJC) codes

  • Software
  • Computer Networks and Communications
  • Electrical and Electronic Engineering


Dive into the research topics of 'Hybrid TOA/AOA geometrical positioning schemes for mobile location'. Together they form a unique fingerprint.

Cite this