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

doi:10.1109/ULTSYM.2007.411

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 proceeding › Conference article published in proceeding or book › Academic research › peer-review

3 Citations (Scopus)

Abstract

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 language	English
Title of host publication	2007 IEEE Ultrasonics Symposium Proceedings, IUS
Pages	1633-1636
Number of pages	4
DOIs	https://doi.org/10.1109/ULTSYM.2007.411
Publication status	Published - 1 Dec 2007
Event	2007 IEEE Ultrasonics Symposium, IUS - New York, NY, United States Duration: 28 Oct 2007 → 31 Oct 2007

Conference

Conference	2007 IEEE Ultrasonics Symposium, IUS
Country/Territory	United States
City	New York, NY
Period	28/10/07 → 31/10/07

Keywords

Corner reflection
Multipath interference
Ultrasonic ranging

ASJC Scopus subject areas

General Engineering

More information

10.1109/ULTSYM.2007.411

Cite this

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title = "Multipath interference between plane and corner reflection for ultrasonic ranging systems",

abstract = "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.",

keywords = "Corner reflection, Multipath interference, Ultrasonic ranging",

author = "Cheng, {Ching Hsiang} and Chong, {Po Fat} and Kwok, {King Lun} and Chan, {Mau Wah} and Fung, {Tsz Yan} and Chen Chao and Leung, {Woon Fong}",

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doi = "10.1109/ULTSYM.2007.411",

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isbn = "1424413834",

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Multipath interference between plane and corner reflection for ultrasonic ranging systems. / Cheng, Ching Hsiang; Chong, Po Fat; Kwok, King Lun et al.
2007 IEEE Ultrasonics Symposium Proceedings, IUS. 2007. p. 1633-1636 4409984.

Research output: Chapter in book / Conference proceeding › Conference article published in proceeding or book › Academic research › peer-review

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AU - Chong, Po Fat

AU - Kwok, King Lun

AU - Chan, Mau Wah

AU - Fung, Tsz Yan

AU - Chao, Chen

AU - Leung, Woon Fong

PY - 2007/12/1

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AB - 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.

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KW - Multipath interference

KW - Ultrasonic ranging

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Multipath interference between plane and corner reflection for ultrasonic ranging systems

Abstract

Conference

Keywords

ASJC Scopus subject areas

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