A closed loop ML algorithm for phase aberration correction in phased array imaging systems. II. Performance analysis [Ultrasound medical imaging]

Author

Fortes, José Mauro P

Author_Institution

Pontificia Univ. Catolica do Rio de Janeiro, Brazil

Volume

44

Issue

2

fYear

1997

fDate

3/1/1997 12:00:00 AM

Firstpage

271

Lastpage

286

Abstract

For pt.I see ibid., vol.44, pp.259-70 (1997). The performance of the maximum likelihood closed loop circuits, proposed in part I for phase aberration correction in phased array imaging systems, is analysed. This analysis is helpful in designing and also in determining the tracking mode phase error variance performance of both closed loop circuits (1-D and 2-D). It is an approximate analysis, suitable under small errors conditions, and considered accurate for high values of the signal to noise ratio.

Keywords

aberrations; acoustic signal processing; biomedical ultrasonics; closed loop systems; maximum likelihood estimation; medical signal processing; ultrasonic transducer arrays; 1-D; 2-D; closed loop ML algorithm; closed loop circuits; maximum likelihood closed loop circuits; performance analysis; phase aberration correction; phased array imaging systems; signal to noise ratio; small errors conditions; tracking mode phase error variance performance; ultrasound medical imaging; Analysis of variance; Circuits; Maximum likelihood estimation; Performance analysis; Phase estimation; Phase measurement; Phased arrays; Signal processing algorithms; Signal to noise ratio; Tracking loops;

fLanguage

English

Journal_Title

Ultrasonics, Ferroelectrics, and Frequency Control, IEEE Transactions on

Publisher

ieee

ISSN

0885-3010

Type

jour

DOI

10.1109/58.585112

Filename

585112