Ultrasound echolocation inspired by a prey detection strategy of big brown bats

Sangwook Park, Dae Eun Kim

Research output: Contribution to journalArticle

2 Citations (Scopus)


It is known that big brown bats can distinguish echo of a prey at various angles. In this paper, we suggest a new object localization strategy using ultrasonic echolocation. We calculate the relative energy ratio between a high frequency component of ultrasound signal and a low frequency component of ultrasound signal for a target object. We found the measure depends on bearing angle of the object in space. We also tested energy ratio of echoed FM ultrasound signals depending on frequency, based on cross-correlation. It can determine the relative angular position of objects even though the reflected signals are congested form each object.

Original languageEnglish
Pages (from-to)161-167
Number of pages7
JournalJournal of Institute of Control, Robotics and Systems
Issue number3
Publication statusPublished - 2012 Mar 1


All Science Journal Classification (ASJC) codes

  • Software
  • Control and Systems Engineering
  • Applied Mathematics

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