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Self-alignment method of gravity meter on shaking condition

A gravimeter and self-alignment technology, which is applied in the direction of instruments, scientific instruments, and gravitational field measurement, can solve the problem that the gravimeter cannot complete high-precision self-alignment

Active Publication Date: 2018-03-13
BEIJING AUTOMATION CONTROL EQUIP INST
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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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  • Self-alignment method of gravity meter on shaking condition
  • Self-alignment method of gravity meter on shaking condition
  • Self-alignment method of gravity meter on shaking condition

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specific Embodiment

[0136] The method proposed by the present invention includes three steps, the first step is the initial righting, the second step is the first position alignment, and the third step is the second position alignment. The initial righting is to return the platform frame angle to zero.

[0137] Coarse leveling and rough north-seeking are completed for the first position alignment. According to the result of rough north-seeking, the X-axis of the platform body is quickly turned to the north direction, and then rough alignment, fine alignment, and estimation of ε are completed. y .

[0138] After the first position alignment is completed, turn the Y-axis of the platform to the north and enter the second position alignment. The second position alignment completes rough alignment, fine alignment, and estimated ε x . A simple procedure for self-alignment is figure 1 shown.

[0139] Each position has coarse alignment and fine alignment, wherein the coarse alignment is a traditiona...

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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 self-alignment of gravimeters, in particular to a self-alignment method of gravimeters under shaking conditions. Background technique [0002] The sea-air gravimeter based on the inertial stable platform uses the earth's rotation angular rate and gravity to complete self-alignment. However, under shaking conditions, the earth's rotation angular rate and gravity that the gravimeter is sensitive to include the interference caused by the movement of the carrier. These Interference directly affects the self-alignment accuracy of the gravimeter, and even leads to self-alignment failure. Contents of the invention [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. The self-alignment method under shaking conditions is mainly to use the leveling circuit ...

Claims

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Application Information

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Patent Type & Authority Applications(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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