Ultrasonic detection using wideband discrete wavelet transform

F. K. Lam, Chi Kin Leung

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

6 Citations (Scopus)

Abstract

This paper describes the design of a wideband spatial processor for the detection of a straight-line object by an ultrasonic pulse-echo detection system. An ultrasonic pulse is transmitted from the transducer and the two wavelets diffracted form the two end points of the straight-line object are received by three spatially separated receivers. Three stages of signal processing are carried out. At the first stage, the Mother Wavelet operator generates three sets of two-dimensional wavelet coefficients. At the second stage, cross wavelet transforms are performed on wavelet coefficients obtained in the first stage. At the third stage, cross wavelet transforms are performed on cross wavelet coefficients obtained in the second stage. As a result of this three-stage operation, a high-resolution image about the environment is generated and the range and bearing of the two end points of the straight-line object are obtained. A simulation program is developed to investigate the processing algorithm in an ultrasonic detection environment.
Original languageEnglish
Title of host publicationIEEE Region 10 International Conference on Electrical and Electronic Technology
Pages890-893
Number of pages4
Publication statusPublished - 1 Dec 2001
EventIEEE Region 10 International Conference on Electrical and Electronic Technology - Singapore, Singapore
Duration: 19 Aug 200122 Aug 2001

Conference

ConferenceIEEE Region 10 International Conference on Electrical and Electronic Technology
CountrySingapore
CitySingapore
Period19/08/0122/08/01

ASJC Scopus subject areas

  • Engineering(all)

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