DocumentCode
1301858
Title
On nonlinear effects of envelope detection in beamforming systems
Author
Trucco, Andrea ; Murino, Vittorio
Author_Institution
Dept. of Biophys. & Electron. Eng., Genoa Univ., Italy
Volume
44
Issue
4
fYear
1997
fDate
7/1/1997 12:00:00 AM
Firstpage
948
Lastpage
952
Abstract
The evaluation of the effects that are due to the square envelope detection performed in an acoustic imaging system is addressed. Envelope detection destroys phase information, producing a nonlinear contribution. The importance of the nonlinear contribution is evaluated by a beam-pattern-like formulation and by several simulations. Generally, a considerable incidence of such nonlinearities has been pointed out.
Keywords
acoustic imaging; acoustic signal processing; array signal processing; underwater sound; acoustic imaging system; beam-pattern-like formulation; beamforming systems; nonlinear effects; phase information; square envelope detection; Acoustic beams; Acoustic imaging; Acoustic signal detection; Array signal processing; Envelope detectors; Layout; Linearity; Phase detection; Scattering; Signal processing;
fLanguage
English
Journal_Title
Ultrasonics, Ferroelectrics, and Frequency Control, IEEE Transactions on
Publisher
ieee
ISSN
0885-3010
Type
jour
DOI
10.1109/58.655212
Filename
655212
Link To Document