Determining an indication of wavefield velocity

摘要

Translational data acquired by at least one translational survey sensor is received, and rotation data is received. A representation of wavefield velocity based on the translational data and the rotation data is determined.

主权项

1. A method comprising:
receiving translational data acquired by at least one translational survey sensor in response to activation of at least one active survey source; receiving rotation data about a first horizontal axis acquired by at least one rotational sensor; and determining, by a computer, a representation of wavefield velocity based on the translational data and the rotation data, the determined representation of the wavefield velocity comprising an apparent slowness of a wavefield along a second horizontal axis or an apparent velocity of the wavefield along the second horizontal axis, the second horizontal axis orthogonal to the first horizontal axis, the apparent slowness or the apparent velocity of the wavefield being based on an incident angle of the wavefield with respect to a vertical axis, and an actual velocity of the wavefield, wherein determining the apparent slowness along the second horizontal axis or the apparent velocity along the second horizontal axis comprises computing a ratio of the rotation data about the first horizontal axis with respect to the translational data.