Title :
Characterization of a High Resolution Acquisition System for Marine Geophysical Applications
Author :
Panahi, S. Shariat ; Alegria, F. ; Manuel, A.
Author_Institution :
Vilanova i la Geltru Technol. Center, Catalonia Tech. Univ., Vilanova I La Geltru
Abstract :
Many geophysical applications as refraction seismicity where the signal level is low and the environmental noise level is high demand low noise, high resolution acquisition systems for data recording. A datalogger based on compact flash memory cards and 24 bits analog-to-digital converters has been designed and built, to be used in our new ocean bottom seismometers (OBS) under construction. This paper presents a characterization test bench to obtain the noise specifications of the acquisition system. Parameters as dynamic range, random noise, effective number of bits, etc. are calculated using the international standards for characterizing waveform recorders and analog-to-digital converters
Keywords :
data acquisition; data loggers; data recording; oceanographic equipment; oceanographic techniques; seismometers; 24 bit; DFT test; OBS; analog-to-digital converters; compact flash memory cards; crosstalk; data recording; datalogger; high resolution acquisition system; international standards; marine geophysical applications; ocean bottom seismometers; random noise; refraction seismicity; waveform recorders; Analog-digital conversion; Crosstalk; Digital filters; Dynamic range; Finite impulse response filter; IIR filters; Instruments; Oceans; Signal to noise ratio; System testing; Acquisition system; Analog-to-Digital Converter; DFT test; crosstalk; dynamic range; effective number of bits; random noise; signal-to-noise ratio;
Conference_Titel :
Instrumentation and Measurement Technology Conference, 2006. IMTC 2006. Proceedings of the IEEE
Conference_Location :
Sorrento
Print_ISBN :
0-7803-9359-7
Electronic_ISBN :
1091-5281
DOI :
10.1109/IMTC.2006.328521
