Gathering Bearing Data for Target Localization

Haluk Bayram, Joshua Vander Hook, Volkan Isler

Research output: Contribution to journalArticlepeer-review

17 Scopus citations


We consider the problem of gathering bearing data to localize targets. We start with a commonly used notion of uncertainty based on geometric dilution of precision (GDOP) and study the following bicriteria problem. Given a set of potential target areas and an uncertainty level U, compute an ordered set of measurement locations for a single robot which 1) minimizes the total cost given by the travel time plus the time spent in taking measurements and 2) ensures that the uncertainty in estimating the target's location is at most U regardless of the targets' locations. We present an approximation algorithm and prove that its cost is at most 28.9 times the optimal cost while guaranteeing that the uncertainty is at most 5.5U. In addition to theoretical analysis, we validate the results in simulation and experiments performed with a directional antenna used for tracking invasive fish.

Original languageEnglish (US)
Article number7390217
Pages (from-to)369-374
Number of pages6
JournalIEEE Robotics and Automation Letters
Issue number1
StatePublished - Jan 2016

Bibliographical note

Publisher Copyright:
© 2016 IEEE.


  • Approximation Algorithms
  • Bearing-only Tracking
  • Field Robots
  • Localization


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