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Study on Theory of Spectral Shaping Filter in the Seismic Prospecting Instrument

Yuan, Z. L.  
The chief factor that cause the seismic exploration resolution reducing is the earth's absorption to thehigh frequency signal while the narrow instantaneous dynamic range of the instrument and the high equivalent input noises also have the contribution. This paper theoretically discussed the function of spectralshaping filter (SSF ) in high resolution exploration application. The SSF can compensate the losses by ab-sorption,lower instrument's equivalent input noise level, widen the.instantaneous dynamic range and sys-tem dynamic range. Based on the analysis of SSF on System- I (System-II ), it is indicated that the highfrequency lifting, the lifting ratio and the range of frequency to be lifted both are important factors affecting the proper function of SSF.
【CateGory Index】: P631.4
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