Multipath interference between plane and corner reflection for ultrasonic ranging systems

Ching Hsiang Cheng, Po Fat Chong, King Lun Kwok, Mau Wah Chan, Tsz Yan Fung, Chen Chao, Woon Fong Leung

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

2 Citations (Scopus)


In this paper, we study the multipath interference between the plane and corner reflections for 40kHz ultrasonic transducers with 55° beam angle moving along or transverse to the transmitting/receiving directions. Discrete spots of low echo signal were found for either transducer moving directions. The interference pattern is similar to the diffraction pattern of a wave passing through an aperture that disrupts the wave. When a destructive or constructive interference happens, there is integer number of half wave length difference between the plane and corner reflection path distances.
Original languageEnglish
Title of host publication2007 IEEE Ultrasonics Symposium Proceedings, IUS
Number of pages4
Publication statusPublished - 1 Dec 2007
Event2007 IEEE Ultrasonics Symposium, IUS - New York, NY, United States
Duration: 28 Oct 200731 Oct 2007


Conference2007 IEEE Ultrasonics Symposium, IUS
Country/TerritoryUnited States
CityNew York, NY


  • Corner reflection
  • Multipath interference
  • Ultrasonic ranging

ASJC Scopus subject areas

  • General Engineering


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