Journal of Institute of Control, Robotics and Systems (제어로봇시스템학회논문지)

Institute of Control, Robotics and Systems (제어로봇시스템학회)
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Ultrasound Echolocation Inspired by a Prey Detection Strategy of Big Brown Bats

박쥐의 먹이 탐지 전략을 모방한 초음파 센서의 물체 위치 추정

  • 박상욱 (연세대학교 전기전자공학부) ;
  • 김대은 (연세대학교 전기전자공학부)
  • Received : 2011.11.15
  • Accepted : 2011.12.20
  • Published : 2012.03.01
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Abstract

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.

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