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Clock Offsets in TDOA Localization

  • Nak-Seon Seong
  • Seong-Ook Park
Part of the Lecture Notes in Computer Science book series (LNCS, volume 4239)

Abstract

Time based TDOA localization systems require time or clock synch-ronization between receivers such as cellular base stations, satellites, and sensor nodes. Imperfection of time synchronization causes degradation in positioning accuracy. However if we know about its characteristics and how to estimate the clock offsets, the localization system can be properly calibrated to provide good quality of services. In this paper, hence, we present how to derive a localization error vector with independent clock offset, and illustrate its effect on the positioning errors, and then, provide a simple method of TDOA clock offset estimation from the observation of error vectors.

Keywords

Sensor Node Wireless Sensor Network Error Vector Time Synchronization Clock Offset 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2006

Authors and Affiliations

  • Nak-Seon Seong
    • 1
  • Seong-Ook Park
    • 2
  1. 1.Electronics and Telecommunications Research InstituteDaejeonKorea
  2. 2.Department of Electronic EngineeringInformation and Communications UniversityDaejeonKorea

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