Three-component marine gravity and magnetic duplex measurement device

Abstract

The present invention discloses a three-component marine gravity and magnetic duplex measurement device. The device comprises a three-component marine gravity and magnetometer and a stable platform located at the bottom portion of the three-component marine gravity and magnetometer, and the bottom portion of the stable platform is provided with a power balance device; the three-component marine gravity and magnetometer comprises an analog-digital conversion circuit and a data storage circuit located at the upper portion of the internal portion of the three-component marine gravity and magnetometer, a three-component gravity sensor located at the middle portion of the internal portion of the three-component marine gravity and magnetometer, a three-component attitude sensor located below thethree-component gravity sensor and a three-component magnetic sensor located at the bottom portion of the internal portion of the three-component marine gravity and magnetometer, the top portion of the external portion of the three-component marine gravity and magnetometer is provided with a data display unit and a signal indication device, and the stable platform is provided with a temperature and salinity finder. The measurement device can perform synchronous collection of three-component marine gravity and magnetic duplex data, is high in measurement data precision and good in accuracy, and can provide more accurate data support for later scientific research.

Description

technical field [0001] The invention relates to the technical field of geophysical exploration, in particular to a three-component marine gravity-magnetic composite measurement device. Background technique [0002] Marine gravity measurement is one of the marine geophysical measurement methods, and it is the work of measuring the gravitational acceleration in the sea area. The advancement of marine gravity measurement technology and the widespread use of gravity results increasingly prove the importance of marine gravity data in geodesy, earth science, marine science, aerospace technology research and military. With sufficient gravity measurement data, the shape of the geoid can be determined, the distribution characteristics and variation laws of gravity anomalies can be given, and then the geological structure, crustal structure, earth morphology, and seabed mineral exploration can be studied. At this stage, the land gravity data is relatively sufficient, the ocean gravit...

AI Technical Summary

Problems solved by technology

[0005] Several marine gravimeters and marine magnetometers currently in use in the world have various defects. For example, marine gravimeters and marine magnetometers are independent ocean gravity field and marine magnetic field measurement instruments, and marine gravimeters can only measure the vertical component of gravity. , low sensor accuracy, poor ability to resist horizontal and vertical disturbance acceleration of ships, and vibrations have a great impact on the instrument, etc.

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