1. A method for processing seismic data, comprising:
receiving the seismic data acquired at one or more receivers due to one or more marine vibroseis sources that emit one or more vibroseis sweeps;
applying a receiver motion correction algorithm to the seismic data to generate receiver motion corrected seismic data;
transforming the receiver motion corrected seismic data into a temporal Fourier domain to generate seismic data as a function of frequency;
reconstructing the transformed seismic data as a function of frequency to correct for one or more motions of the one or more marine vibroseis sources;
transforming the reconstructed seismic data to a time domain; and
generating a seismic image of a subsurface of the Earth based on the transformed reconstructed seismic data.
2. The method of claim 1, further comprising performing a sweep correlation on the receiver motion corrected seismic data before transforming the receiver motion corrected seismic data.
3. The method of claim 2, wherein the sweep correlation is based on one or more frequencies of the vibroseis sweeps.
4. The method of claim 1, wherein the received seismic data is uncorrelated.
5. The method of claim 1, wherein the receiver motion corrected seismic data modifies the seismic data as if the seismic data were acquired at one or more fixed positions.
6. The method of claim 1, wherein reconstructing the transformed seismic data comprises back projecting the seismic data onto a fixed location for each marine vibroseis source.
7. The method of claim 6, wherein the seismic data is back projected using one or more interpolation filters.
8. The method of claim 6, wherein the fixed location corresponds to where one of the marine vibroseis sources starts its vibroseis sweep.
9. The method of claim 1, wherein the transformed seismic data comprises an aliased frequency region and a non aliased frequency region.
10. The method of claim 9, wherein reconstructing the transformed seismic data comprises compensating the seismic data in the aliased frequency region for one or more aliasing effects.
11. The method of claim 9, wherein the seismic data in the aliased frequency region comprises one or more frequencies above a predetermined frequency threshold.
12. The method of claim 11, wherein the predetermined frequency threshold is determined based on a vessel speed and one or more distances between the marine vibroseis sources.
13. The method of claim 9, wherein the seismic data in the aliased frequency region is reconstructed by back projecting the seismic data in the aliased frequency region onto a fixed location for each marine vibroseis source using an interpolation technique designed to interpolate aliased seismic data.
14. The method of claim 9, wherein the seismic data in the non-aliased frequency region is reconstructed by back projecting the seismic data in the non-aliased frequency region onto a fixed location for each marine vibroseis source using a one-dimensional Fourier regularization algorithm.
15. The method of claim 9, wherein the seismic data in the non-aliased frequency region comprises one or more frequencies below a predetermined frequency threshold.
16. The method of claim 1, wherein the one or more marine vibroseis sources emit the vibroseis sweeps using a slip-sweep technique.
17. A computer system, comprising:
a processor; and
a memory comprising program instructions executable by the processor to:
receive the seismic data acquired at one or more receivers due to one or more marine vibroseis sources that emit one or more vibroseis sweeps using a slip-sweep technique;
apply a receiver motion correction algorithm to the seismic data to generate receiver motion corrected seismic data;
transform the receiver motion corrected seismic data into a temporal Fourier domain to generate seismic data as a function of frequency;
reconstruct the transformed seismic data as a function of frequency to correct for one or more motions of the one or more marine vibroseis sources;
transform the reconstructed seismic data to a time domain; and
generate a seismic image of a subsurface of the Earth based on the transformed reconstructed seismic data.
18. The computer system of claim 17, wherein the received seismic data is uncorrelated.
19. A computer-readable storage medium having stored thereon computer-executable instructions which, when executed by a computer, cause the computer to:
receive the seismic data acquired at one or more receivers due to one or more marine vibroseis sources that emit one or more vibroseis sweeps;
apply a receiver motion correction algorithm to the seismic data to generate receiver motion corrected seismic data;
perform a sweep correlation on the receiver motion corrected seismic data;
transform the sweep correlated seismic data into a temporal Fourier domain to generate seismic data as a function of frequency;
reconstruct the seismic data as a function of frequency to correct for one or more motions of the one or more marine vibroseis sources;
transform the reconstructed seismic data to a time domain; and
generate a seismic image of a subsurface of the Earth based on the transformed reconstructed seismic data.
20. The computer-readable storage medium of claim 19, wherein the sweep correlation is based on one or more frequencies of the vibroseis sweeps.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A bypass cable assembly, comprising:
a chip package supported on a circuit board;
a cable including an insulative body portion with pairs of associated signal conductors extending lengthwise through the insulative body portion, the signal conductors of each pair being separated by a first spacing, and a ground member associated with each pair of signal conductors, the ground member and signal conductors having opposing first and second free ends, and first free ends of the ground member and signal conductors being terminated to circuits on the circuit board and communicating with the chip package; and
a connector, the connector including an insulative body that supports a plurality of first and second terminals in a row, each of the first and second terminals including contact and tail portions disposed at opposite ends thereof, the signal conductors at the second ends of the wires contacting corresponding first terminal tail portions of the connector, and the ground member contacting corresponding second terminal tail portions of the connector, the connector first and second terminals being further arranged in a pattern, whereby pairs of the first terminals in the row are separated from other pairs of the first terminals by at least one intervening second terminal, the connector first terminal tail portions being spaced apart from each other in a spacing approximating the first spacing between pairs of signal conductors of the cable.
2. The bypass cable assembly of claim 1, wherein the connector is a backplane connector.