Weighted least-squares pulse-shaping filters with application to ultrasonic signals

The resolution of adjacent surfaces in medical ultrasonic imaging depends on the duration of a reflected echo. By shaping the excitation signal of the transducer, this duration can be decreased. The authors present a method for effective calculation of the excitation pulse by introducing a weighting...

Full description

Saved in:
Bibliographic Details
Published inIEEE transactions on ultrasonics, ferroelectrics, and frequency control Vol. 36; no. 1; pp. 109 - 113
Main Authors Mandersson, B., Salomonsson, G.
Format Journal Article
LanguageEnglish
Published New York, NY IEEE 01.01.1989
Institute of Electrical and Electronics Engineers
Subjects
Acoustics
Band pass filters
Biomedical imaging
Biomedical transducers
Exact sciences and technology
Fundamental areas of phenomenology (including applications)
Image resolution
Least squares approximation
Matched filters
Physics
Pulse shaping methods
Pulse transformers
Signal resolution
Ultrasonic transducers
Ultrasonics, quantum acoustics, and physical effects of sound
Online AccessGet full text

Cover

More Information
Summary:The resolution of adjacent surfaces in medical ultrasonic imaging depends on the duration of a reflected echo. By shaping the excitation signal of the transducer, this duration can be decreased. The authors present a method for effective calculation of the excitation pulse by introducing a weighting function that defines the resolution. A class of filter is obtained that includes the least-mean-squares filter, the pure inverse filter, and the matched filter. The method is demonstrated in an application that increases the resolution of an ultrasonic transducer.< >
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ObjectType-Article-1
ObjectType-Feature-2
ISSN:0885-3010
1525-8955
DOI:10.1109/58.16977