Rotational gravity gradiometer

摘要

A rotational gravity gradiometer includes a first member, a second member, a drive member and a motor. The first member is disposed above the second member orthogonal to and centered with respect to the second member. The first member includes support arms extending from the center of the first member. The second member includes a second pair of support arms extending from a center point of the second member. A mass unit is attached at a distal end of the respective first member and second member. A sensor element is attached between each mass unit a connection point of the opposite member for sensing movement of the mass unit. The drive member is coupled to the motor to drive the first member and the second member rotationally. The respective sensor elements generate a signal in response to deflection of the support arm induced by an external mass.

主权项

1. A rotational gravity gradiometer comprising:
a first member, a second member, a drive member and a motor; the first member disposed above the second member orthogonal to and centered with respect to the second member; the first member comprising a first pair of support arms extending axially from a center of the first member; the second member comprising a second pair of support arms extending axially from a center point of the second member; a mass unit is attached to opposite ends of each support arm at a distal end of the respective first member and second member; a first sensor element attached between each mass unit of the first member and a connection point of the second member for sensing movement of the mass unit; and a second sensor element attached between each mass unit of the second member and the drive member; and the drive member coupled to the motor to drive the first member and the second member rotationally; wherein the respective first and second sensor elements generate a signal in response to deflection of the support arms induced by an external mass.