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A self-alignment method for gravimeter under sloshing conditions

A gravimeter and self-alignment technology, used in instruments, scientific instruments, measuring gravitational fields, etc., can solve the problem that gravimeters cannot complete high-precision self-alignment.

Active Publication Date: 2019-09-17
BEIJING AUTOMATION CONTROL EQUIP INST
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  • Abstract
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Problems solved by technology

[0003] According to the above problems, the present invention proposes a gravimeter self-alignment method to solve the problem that the gravimeter cannot complete high-precision self-alignment under shaking conditions

Method used

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  • A self-alignment method for gravimeter under sloshing conditions
  • A self-alignment method for gravimeter under sloshing conditions
  • A self-alignment method for gravimeter under sloshing conditions

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specific Embodiment

[0149] The method proposed by the present invention includes three steps, step one is initial righting, step two is first position alignment, and step three is second position alignment. The initial support is to return the platform frame angle to the zero position.

[0150] The first position alignment completes the rough leveling and the rough north finding. According to the result of the rough north finding, the platform X axis is quickly turned to the north direction, and then the rough alignment, fine alignment and estimating ε are completed. y .

[0151] After the first position alignment is completed, rotate the Y-axis of the platform to the north direction to enter the second position alignment. The second position alignment completes rough alignment, fine alignment and estimating ε x . The simple process of self-alignment is like figure 1 Shown.

[0152] Each position has coarse alignment and fine alignment. The coarse alignment is a traditional alignment loop, and the fi...

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Abstract

The invention, which belongs to the self-alignment field of a gravity meter, particularly relates to a self-alignment method of a gravity meter on a shaking condition. According to the traditional method, when self-aligning is carried out in a shaking state, the self-alignment accuracy of the gravity meter is affected on the shaking condition because of the interference on the autoroatation angular rate and the gravity. However, with the method provided by the invention, the self-alignment accuracy of the gravity meter is improved on the shaking condition; and the requirements of technical indicators are met. The method comprises three steps: step one, carrying out initial righting; step two, carrying out alignment on a first position; and step three, carrying out alignment on a second position.

Description

Technical field [0001] The invention belongs to the field of gravimeter self-alignment, and particularly relates to a self-alignment method of the gravimeter under shaking conditions. Background technique [0002] The sea-to-air gravimeter based on the inertially stabilized platform uses the earth's rotational angular rate and gravity to complete self-alignment. However, under shaking conditions, the earth's rotational angular rate and gravity sensitive to the gravimeter include interference caused by the movement of the carrier. Interference directly affects the self-alignment accuracy of the gravimeter, and even causes self-alignment failure. Summary of the invention [0003] According to the above-mentioned problems, the present invention proposes a gravimeter self-alignment method to solve the problem that the gravimeter cannot complete high-precision self-alignment under shaking conditions. The self-alignment method under shaking conditions mainly uses the leveling loop and ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01V7/00G01V13/00
Inventor 赵明胡平华黄鹤唐江河刘东斌陈晓华苗成义
Owner BEIJING AUTOMATION CONTROL EQUIP INST
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