Skip to main content

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

Buy Article:

$63.00 plus tax (Refund Policy)


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 direction is 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 direction of 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 reflecting object 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.

Document Type: Research Article


Affiliations: Intelligent Robot Laboratory, University of Tsukuba, Tsukuba 305, Japan

Publication date: 1996-01-01

  • Access Key
  • Free ContentFree content
  • Partial Free ContentPartial Free content
  • New ContentNew content
  • Open Access ContentOpen access content
  • Partial Open Access ContentPartial Open access content
  • Subscribed ContentSubscribed content
  • Partial Subscribed ContentPartial Subscribed content
  • Free Trial ContentFree trial content
Cookie Policy
Cookie Policy
Ingenta Connect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more