Switchable front-end measurement unit for towed marine electromagnetic survey cables
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United States of America Patent
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Issued Date -
Oct 27, 2011
app pub date -
Apr 27, 2010
filing date -
Apr 27, 2010
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
A marine electromagnetic streamer includes a plurality of electrodes disposed along a longitudinal dimension of the streamer. At least one signal processing module is disposed at a selected position along the streamer. A multipole switch associated with the at least one module is electrically coupled between a signal input of the signal processing module and selected pairs of the electrodes. The switch is configured to enable the selected pairs coupled to the switch such that selection thereof results in at least one of selected electrode spacing and selected electrode offset from an electromagnetic energy source.
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