Sampling parameters optimization of the data acquisition for ultrasonic time of flight measurements

Author

Svilainis, Linas ; Dumbrava, Vytautas

Author_Institution

Dept. of Signal Process., Kaunas Univ. of Technol., Kaunas

fYear

2008

fDate

23-26 June 2008

Firstpage

785

Lastpage

790

Abstract

An ultrasonic system using a pulse for time-of-flight (TOF) estimation from noisy echoes has been analyzed in paper. Simulation has been used as the sampling parameters influence evaluation tool. The precision of the time delay estimation using the direct correlation technique has been theoretically calculated and compared to the simulation results. The results indicate that sampling frequency selection is not important for TOF precision if noise spectral density is kept constant. ADC resolution influence on TOF estimation performance has also been analysed.

Keywords

data acquisition; delay estimation; echo; signal sampling; ultrasonic applications; ADC resolution; data acquisition; direct correlation technique; noise spectral density; noisy echoes; sampling parameters optimization; time delay estimation; ultrasonic time-of-flight measurements; Data acquisition; Delay effects; Filters; Frequency; Sampling methods; Signal processing; Signal resolution; Signal sampling; Time measurement; Ultrasonic variables measurement; ADC parameters; Ultrasonic data acquisition; noise influence; time of flight estimation;

fLanguage

English

Publisher

ieee

Conference_Titel

Information Technology Interfaces, 2008. ITI 2008. 30th International Conference on

Conference_Location

Dubrovnik

ISSN

1330-1012

Print_ISBN

978-953-7138-12-7

Electronic_ISBN

1330-1012

Type

conf

DOI

10.1109/ITI.2008.4588511

Filename

4588511