Method utilizing gravity gradiometer to measure gravity gradients

A Gravity Gradiometer, Gravity Gradient Technology, Applied in the Field of Measurement

Active Publication Date: 2014-01-08
BEIJING INST OF AEROSPACE CONTROL DEVICES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the development of relevant domestic gravity gradiometers is still in the theoretical analysis and engineering prototype development, and the related measurement techniques and methods are still in a relatively primitive stage.

Method used

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  • Method utilizing gravity gradiometer to measure gravity gradients
  • Method utilizing gravity gradiometer to measure gravity gradients
  • Method utilizing gravity gradiometer to measure gravity gradients

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0041] like image 3 As shown, its specific implementation is as follows:

[0042] The gravitational gradient measurement facility is a gravity gradiometer, and its model is simplified as a cylinder. The radius r of the gravity gradiometer is taken. The gravitational gradient generation facility is a gravity generating device, which is spherical, with a radius R and a uniform material ρ.

[0043] Establish the geographic coordinate system OXYZ of the northeast sky of the gravity gradiometer, the rotation axis OZ axis is perpendicular to the geoid, the rotation speed is ω, the intersection point of the plane formed by the four accelerometers and the rotation axis is the origin O of the coordinate system; the gravity generating device is at the coordinate The coordinates in the system OXYZ are shown as figure 2 shown.

[0044] Starting from the concept of gravitational field, the influence of the gravity generating device on the gravity gradient measurement system is deduced,...

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Abstract

The invention discloses a method utilizing a gravity gradiometer to measure gravitation gradients. According to the method, an expression is output according to the gravitation gradients acted on the gravity gradiometer by a gravitation generating device, a track having the most obvious changes of the theoretical gravitation gradients in space is determined, then the gravitation generating device moves on the most optimized track derived in theory, the gravitation gradients caused by the gravitation generating device on various points of the track are measured, and stored and processed through signals, the measured gravitation gradients and the theoretical gravitation gradients are compared for judgment, and measuring accuracy and the resolution ratio of the gravity gradiometer are obtained. The method can be used for conducting accuracy measurement, parameter standardization and error correction of the gravity gradiometer, and fill the measuring blank of the gravitation gradients inland.

Description

technical field [0001] The invention relates to a method for measuring a gravitational gradient, in particular to a method for measuring a gravitational gradient by using a gravity gradiometer, and belongs to the technical field of measurement. Background technique [0002] With the development of science and technology, high-precision navigation, geophysical prospecting, and submarine precision sneaking have put forward higher requirements for obtaining gravity field information. Gravity gradiometer is an important technique and method for measuring gravitational field information. Compared with the gravimeter, the gravity gradiometer has the following advantages: the gravity gradiometer overcomes the influence of the linear acceleration of the moving carrier of the gravity gradient measurement system; the accuracy potential of the gravity gradiometer is huge; the gravity gradiometer can measure the gravity tensor. At present, the technology related to gravity gradiometer ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01V7/00
Inventor 马存尊李海兵杨慧马杰韩军海郭刚
Owner BEIJING INST OF AEROSPACE CONTROL DEVICES
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