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http://dx.doi.org/10.5302/J.ICROS.2012.18.3.161

Ultrasound Echolocation Inspired by a Prey Detection Strategy of Big Brown Bats  

Park, Sang-Wook (Yonsei University)
Kim, Dae-Eun (Yonsei University)
Publication Information
Journal of Institute of Control, Robotics and Systems / v.18, no.3, 2012 , pp. 161-167 More about this Journal
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.
Keywords
ultrasonic; echolocation; object localization; big brown bats;
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Times Cited By KSCI : 3  (Citation Analysis)
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