公开(公告)号：US09891342B2

公开(公告)日：2018-02-13

申请号：US14431156

申请日：2013-09-25

Applicant: TECHNOLOGICAL RESOURCES PTY. LIMITED

Inventor： Robert James Smith ,  John William Paine

IPC: G01V7/06 ,  G01V7/16

CPC classification number: G01V7/16 ,  G01V7/06

Abstract: The present disclosure provides a method of processing gravity gradient data indicative of an output generated by an airborne gravity gradiometer that is moving along a flight path over a terrain. The method comprises the step of providing the gravity gradient data. The gravity gradient data comprising gravity gradient data elements that are associated with respective flight path segments of the airborne gravity gradiometer. Further, the method comprises providing terrain data indicative of a topography and a density or a density distribution of the terrain above a datum that is below the surface of the terrain over which the airborne gravity gradiometer is moved. The method also comprises providing information concerning the flight path of the airborne gravity gradiometer in three dimensions. In addition, the method comprises calculating the gravity gradient response of the terrain using the provided terrain data and the provided information concerning the flight path. The gravity gradient terrain response data is calculated for a plurality of locations of the gravity gradiometer along at least some of the flight path segment. In addition, the method comprises correcting the gravity gradient data by forming a difference between the calculated gravity gradient terrain response of the terrain topography and the gravity gradient data.

公开(公告)号：US20150219788A1

公开(公告)日：2015-08-06

申请号：US14431156

申请日：2013-09-25

Applicant: TECHNOLOGICAL RESOURCES PTY. LIMITED

Inventor： Robert James Smith ,  John William Paine

IPC: G01V7/16

CPC classification number: G01V7/16 ,  G01V7/06

Abstract: The present disclosure provides a method of processing gravity gradient data indicative of an output generated by an airborne gravity gradiometer that is moving along a flight path over a terrain. The method comprises the step of providing the gravity gradient data. The gravity gradient data comprising gravity gradient data elements that are associated with respective flight path segments of the airborne gravity gradiometer. Further, the method comprises providing terrain data indicative of a topography and a density or a density distribution of the terrain above a datum that is below the surface of the terrain over which the airborne gravity gradiometer is moved. The method also comprises providing information concerning the flight path of the airborne gravity gradiometer in three dimensions. In addition, the method comprises calculating the gravity gradient response of the terrain using the provided terrain data and the provided information concerning the flight path. The gravity gradient terrain response data is calculated for a plurality of locations of the gravity gradiometer along at least some of the flight path segment. In addition, the method comprises correcting the gravity gradient data by forming a difference between the calculated gravity gradient terrain response of the terrain topography and the gravity gradient data.

Abstract translation: 本公开提供了一种处理重力梯度数据的方法，该重力梯度数据指示由沿着地形的飞行路径移动的机载重力梯度仪产生的输出。 该方法包括提供重力梯度数据的步骤。 重力梯度数据包括与机载重力梯度计的相应飞行路径段相关联的重力梯度数据元素。 此外，该方法包括提供指示地形的地形数据，以及在空中重力梯度计移动的地形表面之下的基准之上的地形的密度或密度分布。 该方法还包括提供三维空中重力梯度飞行路径的信息。 此外，该方法包括使用所提供的地形数据和关于飞行路径的信息来计算地形的重力梯度响应。 沿重力梯度计的多个位置计算重力梯度地形响应数据，沿着至少一些飞行路径段。 此外，该方法包括通过形成地形地形的计算的重力梯度地形响应与重力梯度数据之间的差来校正重力梯度数据。