Time Base Error Characterization of a Data Recorder Aimed For Marine Seismology

Author

Panahi, S. Shariat ; Alegria, F. Correa ; Manuel, A. ; Serra, A. Cruz

Author_Institution

Tech. Univ. of Catalonia, Vilanova i la Geltru

fYear

2007

fDate

1-3 May 2007

Firstpage

1

Lastpage

5

Abstract

In many marine geophysical applications, the quality of acquired data is dependent on the instrument precise timing. In marine seismic refraction experiments, ocean bottom seismometers (OBS) are used to collect data for several months. This paper presents the characterization of the time base error of the data recorder based on 24 bits analog-to-digital converters and Compactflash memory cards, designed and built for our new ocean bottom seismometer (OBS), now under construction. The characterization tests are based on the IEEE Std 1057-Standard For Digitizing Waveform Recorders where the result of the two methods given have been compared and an upper bound for the aperture uncertainty of the sampling instants has been calculated.

Keywords

data acquisition; data recording; oceanographic equipment; seismometers; underwater equipment; IEEE Std 1057-Standard; analog-to-digital converters; compactflash memory cards; data recorder; digitizing waveform recorders; marine geophysical applications; marine seismic refraction; marine seismology; ocean bottom seismometers; time base error; Analog-digital conversion; Apertures; Instruments; Oceans; Sampling methods; Seismology; Testing; Timing; Uncertainty; Upper bound; ADC; Acquisition system; Time Base error; aperture uncertainty Ocean Bottom Seismometer (OBS); jitter;

fLanguage

English

Publisher

ieee

Conference_Titel

Instrumentation and Measurement Technology Conference Proceedings, 2007. IMTC 2007. IEEE

Conference_Location

Warsaw

ISSN

1091-5281

Print_ISBN

1-4244-0588-2

Type

conf

DOI

10.1109/IMTC.2007.379032

Filename

4258164