Measurement of reflecting direction from the center frequency of the echo in ultrasonic sensing

Teruko Yata, Shin'Ichi I. Yuta

研究成果: Article査読

4 被引用数 (Scopus)


Ultrasonic sensors are widely used as external sensors for mobile robots, because they are simple to build and use, and are of low cost. Generally, in the pulse-echo method the distance to the target can be accurately measured, but accurate measurement of the reflecting target directionis difficult. To realize navigation of a mobile robot in a complicated environment like a doorway or surface tracking of the wall, the resolution of the lateral direction and surface angle of the reflecting target are very important. In this paper, we propose a method which can find the directionof the target by analyzing the frequency spectrum of the echo in the pulse-echo method. The new method is based on the consideration of the physical properties of the ultrasonic transducer and its environment. Using this method, we will be able to determine the direction angle to the reflectingobject surface from the sensor, using only a single receiver in the pulse-echo method. We present experimental results to show the potential for practical application.

ジャーナルAdvanced Robotics
出版ステータスPublished - 1996 1月 1

ASJC Scopus subject areas

  • 制御およびシステム工学
  • ソフトウェア
  • 人間とコンピュータの相互作用
  • ハードウェアとアーキテクチャ
  • コンピュータ サイエンスの応用


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