WIRELESS EXPLORATION SEISMIC SYSTEM
First Claim
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1. A method for use in seismic data acquisition, comprising the steps of:
- disposing, in series, a plurality of seismic data acquisition modules that are operative to wirelessly communicate acquired seismic data, wherein said acquisition modules define a wireless serial data transfer path for relaying data from upstream acquisition modules to downstream acquisition modules and a data collection unit;
assigning a first acquisition module in said serial data transfer path a first multiplexing signature sequence, wherein in successive transmission periods, the first acquisition module advances sequentially through a first plurality of multiplexing signatures of the first multiplexing sequence;
assigning a second acquisition module in said serial data transfer path a second multiplexing signature sequence, wherein in successive transmission periods, the second acquisition module advances sequentially through a second plurality of multiplexing signatures of the second multiplexing sequence.
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Abstract
Systems and methods for seismic data acquisition employing a dynamic multiplexing technique. The dynamic multiplexing technique may include advancing one or more modules in a seismic array through a multiplexing signature sequence in successive transmission periods. The multiplexing signature sequence may be random or pseudo-random. A shared multiplexing signature sequence may be used at all the modules in the seismic array. As such, modules belonging to a common collision domain may operate out of phase with respect to the shared multiplexing signature sequence.
20 Citations
22 Claims
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1. A method for use in seismic data acquisition, comprising the steps of:
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disposing, in series, a plurality of seismic data acquisition modules that are operative to wirelessly communicate acquired seismic data, wherein said acquisition modules define a wireless serial data transfer path for relaying data from upstream acquisition modules to downstream acquisition modules and a data collection unit; assigning a first acquisition module in said serial data transfer path a first multiplexing signature sequence, wherein in successive transmission periods, the first acquisition module advances sequentially through a first plurality of multiplexing signatures of the first multiplexing sequence; assigning a second acquisition module in said serial data transfer path a second multiplexing signature sequence, wherein in successive transmission periods, the second acquisition module advances sequentially through a second plurality of multiplexing signatures of the second multiplexing sequence. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method for use in seismic data acquisition, comprising:
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disposing a plurality of seismic data acquisition modules in an array, wherein each seismic data acquisition module is operative to wirelessly communicate with at least one other seismic data acquisition module in said array to define at least a first serial data transmission path; assigning each of said plurality of seismic data acquisition modules in said first serial data transmission path a multiplexing signature sequence for use in transmitting said seismic data, wherein at least one multiplexing signature is assigned to first and second seismic data acquisition modules in said first serial data transmission path during a first common transmission period; during the first common transmission period, transmitting seismic data from said first and second seismic data acquisition units using said at least one multiplexing signature; advancing the first and second seismic data acquisition modules in the multiplexing signature sequence such that the first and second seismic data acquisition modules are assigned at least one different multiplexing signature during a second common transmission period. - View Dependent Claims (13, 14, 15, 16, 17)
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18. A system for use in seismic data acquisition, comprising:
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a plurality of seismic data acquisition modules, disposed in series, operable to wirelessly communicate acquired seismic data, wherein said acquisition modules define a wireless serial data transfer path for relaying data from upstream acquisition modules to downstream acquisition modules and a data collection unit; a first acquisition module in said serial data transfer path for transmitting seismic data using a first multiplexing signature from a first multiplexing signature sequence during a first transmission period, wherein said first acquisition module advances through said first multiplexing signature sequence in successive transmission periods; and a second acquisition module in said serial data transfer path for transmitting seismic data using a second multiplexing signature from a second multiplexing signature sequence during the first transmission period, wherein said second acquisition module advances through said second multiplexing signature sequence in successive transmission periods; wherein said first multiplexing signature and said second multiplexing signature are different during the first transmission period. - View Dependent Claims (19, 20, 21, 22)
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Specification