Theoretical Study And Improving On High-resolution Data Acquisition System

The status quo of high-resolution data acquisition system is discussed and by studying the character of high-resolution seismic exploration and seismic signal, the theoretical models and character of each unit are gained. This paper point out that under 1000 meter's depth where petroleum is embedded the IDR of central controlled seismic instrument and telemetricseismic instrument are lower than 70dB which can't meet the needs of high-resolution seismic exploration. Through analyzing strata's absorbtion and attenuation, the specialty of SSF in SYSTEM-ONE (TWO) and 24-bit A Z A/D, the scheme to improve the data acquisition system is brought forward including the design of multiple differential spectrum equilibrium filter(MDSEF) and program control amplifier. The software for SSF and MDSSF's computer simulation is designed . A series of geologic models are set up. Basing on those models the computer simulation is finished, the results prove that the improved data acquisition system can compensate the absorbtion and attenuation, high ten the resolution as well.What have drawn from the discussion above will give guidance to high-resolution data acquisition and data processing. And the improvement of high-resolution data acquisition system will push the development of the technique in data acquisition.