Abstract: A sensor retrieval system includes a self-propelled unmanned ground vehicle (UGV) having a control system including a navigation controller, an excavator controller and an extractor controller. The navigation controller has instructions to move the UGV to proximate a geodetic position of a sensor disposed proximate a surface of the ground. The UGV further comprises a sensor position locator arranged to determine distance, direction and relative elevation of the sensor with respect to the UGV. An extractor is in signal communication with the extractor controller. The extractor comprises means for lifting the sensor from the ground to a predetermined depth. An excavator is in signal communication with the excavator controller. The excavator comprises means for removing overburden from above the sensor to leave the overburden to at most the predetermined depth.

Abstract: A sensor retrieval system includes a self-propelled unmanned ground vehicle (UGV) having a control system including a navigation controller, an excavator controller and an extractor controller. The navigation controller has instructions to move the UGV to proximate a geodetic position of a sensor disposed proximate a surface of the ground. The UGV further comprises a sensor position locator arranged to determine distance, direction and relative elevation of the sensor with respect to the UGV. An extractor is in signal communication with the extractor controller. The extractor comprises means for lifting the sensor from the ground to a predetermined depth. An excavator is in signal communication with the excavator controller. The excavator comprises means for removing overburden from above the sensor to leave the overburden to at most the predetermined depth.

Abstract: Disclosed are various embodiments of methods and systems for a 3D seismic data acquisition array, comprising: a first plurality of receiver positions, substantially equally spaced along a first plurality of substantially parallel and substantially equally spaced receiver lines; a second plurality of receiver positions, substantially equally spaced along a second plurality of substantially parallel and substantially equally spaced receiver lines, wherein the receiver lines in the second plurality of receiver lines are substantially orthogonal to the receiver lines in the first plurality of receiver lines; a plurality of source positions, the source positions being located along a plurality of substantially parallel and substantially equally spaced source lines that are substantially parallel to one of the diagonals of the rectangles formed by the first plurality of receiver lines and the second plurality of receiver lines.

Abstract: A method for acquiring three-dimensional seismic data for sub-surface geologic features wherein a seismic source array is moved along a survey pattern having a plurality of source lines of unequal lengths that are substantially parallel to each other and intersect a receiver line. The survey pattern can be repeated in an overlapping and interleaved fashion to survey a larger area.

Abstract: A method for acquiring three-dimensional seismic data for sub-surface geologic features wherein a seismic source array is moved along a survey pattern having a plurality of source lines of unequal lengths that are substantially parallel to each other and intersect a receiver line. The survey pattern can be repeated in an overlapping and interleaved fashion to survey a larger area.