Gravity gradiometer survey techniques

摘要

We describe improved techniques for airborne gravity gradiometer surveys. In particular we describe a method and system for performing a gravity gradiometer survey of a surveyed region of terrain, the method comprising: providing an aircraft with a gravity gradiometer; flying said aircraft over said terrain at a speed of at least 100m/s and at an average height above said terrain of above said terrain of at least 300m; and collecting gravity gradient data for said surveyed region of terrain from said gravity gradiometer, said gravity gradient data comprising data for at least one component of the gravity gradient tensor.