Title :
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
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;
Conference_Titel :
Information Technology Interfaces, 2008. ITI 2008. 30th International Conference on
Conference_Location :
Dubrovnik
Print_ISBN :
978-953-7138-12-7
Electronic_ISBN :
1330-1012
DOI :
10.1109/ITI.2008.4588511
