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Dynamic precision assessment method based on movable base gravity meter

A technology of dynamic precision and gravimeter, which is applied in the direction of instruments, geophysical measurement, measuring devices, etc., can solve the problems of no good evaluation plan and high test cost of gravity measuring instruments

Active Publication Date: 2017-02-22
BEIJING INST OF AEROSPACE CONTROL DEVICES
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Problems solved by technology

However, the test cost of this method is too high, and there is no good evaluation plan for the gravimetric measuring instrument in the ground test

Method used

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  • Dynamic precision assessment method based on movable base gravity meter
  • Dynamic precision assessment method based on movable base gravity meter
  • Dynamic precision assessment method based on movable base gravity meter

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Embodiment Construction

[0095] Below in conjunction with accompanying drawing and specific embodiment the present invention is described in further detail:

[0096] The dynamic accuracy evaluation method for the gravimeter of the moving base proposed by the present invention adopts the vehicle-mounted test method, and measures back and forth along the predetermined survey line, and evaluates the internal coincidence accuracy of the instrument through the repeated measurement results of the survey line, and can also use the handheld relative gravimeter The external coincidence accuracy of the instrument is evaluated by introducing an external reference point. Its specific implementation is as follows:

[0097] Step (1), erecting a differential GPS base station system on the ground, said GPS base station system comprising a first GPS receiver, a first GPS antenna, a bracket, a first recording device and a first power supply. Wherein the first GPS antenna is fixed on the support, the first GPS receiver...

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Abstract

The invention relates to a dynamic precision assessment method based on a movable base gravity meter, and the method comprises the steps: enabling the movable base gravity meter to be installed on a specially designed test vehicle, and selecting a proper test road segment for reciprocating running measurement; and achieving the precise and effective assessment of inner coincidence precision of the movable base gravity meter through the comparison of multiple gravity abnormal values of the same road segment. Moreover, the method is simple, is easy to implement, is low in cost, and is high in efficiency. In addition, a processing method for gravity abnormality data is strong in anti-interference capability, is higher in data processing precision, and is especially suitable for the gravity abnormality extraction of a high-precision movable base gravity meter. The method can be used for assessing the inner coincidence measurement precision of the movable base gravity meter, and is suitable for the field running test of the movable base gravity meter.

Description

technical field [0001] The invention relates to a dynamic accuracy evaluation method for a gravimeter on a moving base, and belongs to the technical field of aerospace high-precision inertial instrument testing. Background technique [0002] Developed countries have mastered gravity measurement technologies, instruments, and gravity field data processing and application technologies such as aviation, ocean, and satellite, and their cutting-edge technologies and instruments have imposed a blockade on my country. The current status of my country's gravity measurement technology is far from meeting the urgent needs of national defense security, national economic construction and earth science research for precise gravity measurement. In recent years, some domestic universities and research institutes have conducted research in this field and formed a prototype. Due to the technical blockade of foreign countries, it is not clear how foreign countries evaluate the accuracy of th...

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Application Information

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IPC IPC(8): G01V13/00G01C25/00
CPCG01C25/005G01V13/00
Inventor 罗骋李东明王文晶李海兵曾培香侯淑华熊志明杨艳广
Owner BEIJING INST OF AEROSPACE CONTROL DEVICES
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