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US 2003/0198132 A1Published application
Adaptive filtering apparatus and method for seismic data acquisition
AssigneeInput/Output, Inc.
InventorsRussell Kappius, Gary Crews
Life of this patent
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Abstract
The present invention provides an adaptive filtering method for substantially eliminating ground roll noise encountered during seismic data acquisition. An apparatus for acquiring seismic data is provided that includes an adaptive filtering circuit coupled to a multi-axis sensor device.
Claims26
A method of filtering seismic signals in a seismic survey system, the method comprising:
- a) receiving an acoustic wave using a detector;
- b) transmitting from the detector a first signal and a second signal, the first signal and the second signal being indicative of directional components of the received acoustic wave;
- and
- c) applying an adaptive filter algorithm to the first signal, the adaptive filter including a feedback signal indicative of a selected portion of the first signal combined with the second signal.
1 more element
An apparatus for providing filtered seismic signals, comprising:
- a) a detector coupled to the earth for receiving an acoustic wave, the detector providing an output comprising a first signal and a second signal, the first signal and the second signal being indicative of directional components of the received acoustic wave;
- b) a processor coupled to the detector for receiving the first signal and the second signal, said processor processing commands for applying an adaptive filter algorithm to the first signal, the adaptive filter including a feedback signal indicative of a selected portion of the first signal combined with the second signal.
Dependencies are inferred from the claim text.