Seismic vibrator control system
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United States of America Patent
Stats
-
Jan 8, 1985
Grant Date -
N/A
app pub date -
Apr 13, 1981
filing date -
Apr 13, 1981
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A method and apparatus for construction of a seismic vibrator control signal which comprises manually selecting sweep parameter data values for starting frequency, ending frequency, sweep time and taper time and inputting to an addressable storage medium. Thereafter, determining for each of a plurality of sample points throughout the sweep time, the sweep rate of change per sample point and the accumulated frequency value per sample point, and outputting in real time the digital sweep values for each successive sample point, and subsequently converting and smoothing said successive digital sweep values to an analog control signal of the selected frequency, relative amplitude and duration of sweep length.
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Family
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Cited Art Landscape
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