Method and apparatus for controlling an immersed multisource array emitting acoustic impulses
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United States of America Patent
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Apr 6, 1993
Grant Date -
N/A
app pub date -
Jun 28, 1991
filing date -
Jun 29, 1990
priority date (Note) -
Expired
status (Latency Note)
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Abstract
In a multisource array of seismic sources, each source is associated with one or more sensors (Ci) for picking up the impulses (TB or signature) emitted by the associated source when triggered. The apparatus essentially includes one or more acquisition arrays (Ai), each one associated with a storage unit (Mi) for all the signals emitted by the pickups (Ci) under the control of a computer (10). Each memory unit includes a comparison module (19, 21, 22) for comparing the digitized samples with a threshold value. The number of each one of the channels where a threshold overrun has occurred is recorded in a reference register (24) which is systematically read by the computer. This monitoring of the level of the picked up signals is carried out outside the normal period where the sources are triggered.
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