COMPUTING ROTATION DATA USING A GRADIENT OF TRANSLATIONAL DATA

摘要

Translational data in a first direction is measured by particle motion sensors contained in an elongated housing of a sensor device provided at an earth surface. The particle motion sensors are spaced apart along a second, different direction along a longitudinal axis of the elongated housing. Rotation data around a third direction is computed based at least in part on computing a gradient of the translational data with respect to the second direction.

主权项

1. A method of seismic surveying, comprising:
placing a seismic sensor system at least partially into an earth surface; actuating a seismic source to transmit impulses into an earth subsurface; receiving, by the seismic sensor system, translational data in a first direction measured by particle motion sensors contained in an elongated housing of a seismic sensor device provided proximate the earth surface, the particle motion sensors spaced apart along a second, different direction along a longitudinal axis of the elongated housing, and receiving translational data in a third direction measured by additional particle motion sensors in the housing, the translational data in the first and third directions corresponding at least partially to the impulses; and recording the translational data in the first direction and the translational data in the third direction, wherein a gradient of the translational data in the first direction with respect to the second direction is useable to compute rotation data around the third direction, and wherein a gradient of the translational data in the third direction with respect to the second direction is useable to compute rotation data around the first direction.