Single- and double-difference algorithms for position and time-delay calibration of transducer-elements in a sparse array

Yue Li*, Ian Sharp, Mark Hedley, Phil Ho, Y. Jay Guo

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

Abstract

A method for the calibration of the position and time delay of transducer elements in a large, sparse array used for underwater, high-resolution, ultrasound imaging has been described in a previous work. This algorithm is based on the direct algorithm used in the global positioning system (GPS), but the wave propagation speed is treated as one of the to-be-calibrated parameters. In this article, the performance of two other commonly used GPS algorithms, namely the single-difference algorithm and the double-difference algorithm, is evaluated. The calibration of the propagation speed also is integrated into these two algorithms. Furthermore, a novel, least-squares method is proposed to calibrate the time delay associated with each transducer element for these two algorithms. The performances of these algorithms are theoretically analyzed and evaluated using numerical analysis and simulation study. The performance of the direct algorithm, the single-difference algorithm, and the double-difference algorithm is compared. It was found that the single-difference algorithm has the best performance among the three algorithms for the current application, and it is capable of calibrating the position and time delay of transducer elements to an accuracy of one-tenth of a wavelength.

Original languageEnglish
Pages (from-to)1188-1197
Number of pages10
JournalIEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control
Volume54
Issue number6
DOIs
Publication statusPublished - Jun 2007
Externally publishedYes

Fingerprint Dive into the research topics of 'Single- and double-difference algorithms for position and time-delay calibration of transducer-elements in a sparse array'. Together they form a unique fingerprint.

Cite this