Abstract：Seismic signal is cantaminated with different types of noise during the variaus stages of data acquisitian. This naise can be subdivided into four basic categaries: Instrument naise; Source generated organized noise; Eloct romagnetic pick-up; Cultural noise; Signal-to-noise ratio has become a key factor, since amplitude and phase information of the data can only be used to measure rock properties in favorable signal-to-raise conditiarts. A new approach is needed in developing a data acquisition system which will: Continually monitor signal-to-noise ratio on all data channels during normal operation. Evaluate predominant frequencies and velocities of the source generated organized noise so that field parameters can be modified to give optimum signal-to-naise ratios. Reduce the effect of electromagnetic pick-up by using special circuitry in preference to standard notch and co-mode filters. Use algorithms to reduce data degradation caused by cultural noise. Offer data monitors which more closely resemble the final product. Quantitatively evaluate the fidelity of each total recording channel, and so provide the geophysicist with a more complete set of data from which optimum acquisition and processing parameters can be determined.
引用本文:
T. A. Khan, 罗维炳. 数据采集的改进——“对地震地层学的回答”[J]. 石油地球物理勘探, 1982, 17(2): 11-15.
T. A. Khan. Improvement in data acquisition-the answer to seismic stratigraphy?. OGP, 1982, 17(2): 11-15.
