Three-component marine gravity measurement device

Abstract

The invention discloses a three-component marine gravity measurement device. The device comprises a three-component marine gravimeter and a stabilization platform at the bottom of the three-componentmarine gravimeter; the bottom of the stabilization platform is provided with a dynamic balancing device; the three-component marine gravimeter includes an analog-to-digital conversion circuit and datastorage circuit assembly, a three-component gravity sensor and a three-component attitude sensor, wherein the analog-to-digital conversion circuit and data storage circuit assembly is arranged at theupper part of the interior of the gravimeter, the three-component gravity sensor is located at the middle of the interior of the gravimeter, and the three-component attitude sensor is located at thebottom of the interior of the gravimeter; and the top of the gravimeter is provided with a data display unit and signal indicating device assembly. The three-component marine gravity measurement device disclosed by the present invention has the advantages of small size, high sensitivity, low noise, short processing cycle, low manufacturing cost as well as high precision and good accuracy in measurement data. The bottom of the device is supported by the stabilization platform, so that the device has high stability; and the device has a strong capacity of resisting the horizontal disturbance acceleration and vertical disturbance acceleration of a ship and a strong anti-vibration capacity.

Description

technical field [0001] The invention relates to the technical field of geophysical exploration, in particular to a three-component marine gravity measurement device. Background technique [0002] Marine gravity measurement is one of the marine geophysical measurement methods, and it is the work of measuring the acceleration of gravity in the sea area. The progress of marine gravity measurement technology and the widespread use of gravity results have increasingly proved the importance of marine gravity data in geodesy, earth science, ocean science, aerospace technology research and military affairs. Sufficient gravity measurement data can determine the shape of the geoid, give the distribution characteristics and variation rules of gravity anomalies, and then study geological structures, crustal structures, earth forms, and explore seabed minerals. At present, land gravity data is relatively sufficient, ocean gravity data is insufficient, and the ocean area is large. Once t...

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Problems solved by technology

[0008] The current marine gravity measurement devices have various defects, such as only measuring the vertical component of gravity, low sensor accuracy, poor ability to resist horizontal and vertical interference acceleration of ships, and inability to overcome the influence of vibration and other external forces on the instrument. Therefore, , all kinds of interference cannot be eliminated, and the measurement accuracy cannot be guaranteed

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