On passive TDOA and FDOA localization using two sensors with no time or frequency synchronization

Arie Yeredor*

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Traditional passive localization based on Time-Difference of Arrival (TDOA) or Frequency-Difference of Arrival (FDOA) usually involves several remote sensors, which require precise time-synchronization and frequency-locking among them. The need for such time or frequency alignment sometimes poses a serious operational challenge on the system. In addition, it is often desired to keep the number of sensors to a minimum. In this work we look into the operationally-simplest scenario in this context: using only two sensors, without any synchronization or locking. When at least one of the sensors, or the transmitting target, is moving at some considerable speed, it is still possible to localize the target, based on a few TDOA and / or FDOA measurements, by considering the time- and frequency-offsets as additional unknown parameters. We analyze the associated performance bound and propose a Maximum Likelihood estimation approach. The attainable accuracy and its dependence on geometry are demonstrated numerically and in simulation.

Original languageEnglish
Title of host publication2013 IEEE International Conference on Acoustics, Speech, and Signal Processing, ICASSP 2013 - Proceedings
Pages4066-4070
Number of pages5
DOIs
StatePublished - 18 Oct 2013
Event2013 38th IEEE International Conference on Acoustics, Speech, and Signal Processing, ICASSP 2013 - Vancouver, BC, Canada
Duration: 26 May 201331 May 2013

Publication series

NameICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings
ISSN (Print)1520-6149

Conference

Conference2013 38th IEEE International Conference on Acoustics, Speech, and Signal Processing, ICASSP 2013
Country/TerritoryCanada
CityVancouver, BC
Period26/05/1331/05/13

Keywords

  • FDOA
  • TDOA
  • passive localization
  • two sensors
  • unlocked
  • unsynchronized

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