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Title:
GRAVITY GRADIENT MEASUREMENT METHOD AND APPARATUS
Document Type and Number:
WIPO Patent Application WO/2018/161474
Kind Code:
A1
Abstract:
A gravity gradient measurement method and apparatus. In the gravity gradient measurement apparatus, a turntable (3) rotates horizontally around an earth-vertical axis, a vacuum layer (7) is disposed on the turntable (3), the vacuum layer (7) and the turntable (3) define a first chamber, a first three-axis accelerometer (1) and a second three-axis accelerometer (2) are located in the first chamber, the first three-axis accelerometer (1) and the second three-axis accelerometer (2) are symmetrical to each other on the x-axis with respect to the origin of coordinates, distances from the first three-axis accelerometer (1) and the second three-axis accelerometer (2) to the origin of coordinates are both R, the first three-axis accelerometer (1) and the second three-axis accelerometer (2) are symmetrical to each other on the z-axis with respect to the origin of coordinates, a distance, on the z-axis, between the first three-axis accelerometer (1) and the second three-axis accelerometer (2) is h; a measurement module determines, according to acceleration values measured by the first three-axis accelerometer (1) and the second three-axis accelerometer (2), a gravity gradient value in a coordinate system. The gravity gradient measurement method and apparatus of the invention measure a full-tensor gravity gradient by using two three-axis accelerometers.

Inventors:
HU XINNING (CN)
WANG QIULIANG (CN)
LU JINYAN (CN)
WANG HUI (CN)
CUI CHUNYAN (CN)
Application Number:
CN2017/091107
Publication Date:
September 13, 2018
Filing Date:
June 30, 2017
Export Citation:
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Assignee:
INST ELECTRICAL ENG CAS (CN)
International Classes:
G01V7/00
Foreign References:
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Attorney, Agent or Firm:
CCPIT PATENT AND TRADEMARK LAW OFFICE (CN)
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