A decoding device and method for suppressing inter-symbol interference in digital seismograph data transmission

Abstract

The invention provides a decoding device and method for suppressing inter-symbol interference in digital seismograph data transmission, belonging to the field of decoding. The device includes a high-speed differential comparator, a buffer delay, a clock recovery unit, an intersymbol interference judgment unit, a logic level judgment unit, a sampling clock adaptive unit, a high-speed clock counting unit, and a serial data and sampling clock output unit; The high-speed clock counting unit provides a high-speed clock signal for the clock recovery unit, the inter-symbol interference judgment unit, the logic level judgment unit and the sampling clock adaptive unit, and the clock recovery unit, the inter-symbol interference judgment unit, the logic level judgment unit and the sampling clock The clock adaptive unit cooperates to complete the initial recovery of the clock in the transmission signal, the judgment of whether there is inter-symbol interference, the judgment of the width of the logic level, the acquisition of the adaptive sampling clock and the acquisition of the final transmission data.

Description

technical field [0001] The invention belongs to the field of decoding, and in particular relates to a decoding device and method for suppressing inter-symbol interference in digital seismograph data transmission, which is used for decoding when receiving terminal information is interfered in long-line transmission. Background technique [0002] High-precision digital seismograph is a geological exploration instrument used to record artificial or natural seismic signals, and then to find oil, gas, coal and other mineral resources based on the records of these seismic signals, and can be used to detect the internal structure of the earth, conduct engineering and geological Disaster prediction, etc. Seismic exploration method is still the main means of oil and gas exploration, and also an important exploration method for other mineral resources, and is widely used in the study of the earth's internal structure, engineering exploration and detection, geological disaster predicti...

AI Technical Summary

Problems solved by technology

[0004] Since the measurement area of ​​the digital seismograph is very wide and the transmission line is often kilometers, the Manchester encoding will also cause inter-symbol interference at the receiving end due to factors such as noise interference and line length.

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