Measurement device and method for deflection of the vertical, gravity acceleration and gravity gradient

Abstract

The invention provides a measurement device and method for deflection of the vertical, gravity acceleration and gravity gradient. The measurement device comprises a base, a cylinder, a laser tracker,target balls, an atomic clock and GNSS receivers. The measurement method comprises the following steps of s1, mounting the measurement device at a measurement point P, and vacuumizing the interior ofthe cylinder; s2, obtaining a coordinate of the measurement point P under an earth-fixed coordinate system, and a conversion parameter between a body-fixed coordinate system and the earth-fixed coordinate system, through utilization of the GNSS receivers and the atomic clock with known coordinates under the body-fixed coordinate system; s3, obtaining the conversion parameter between an independentcoordinate system and the body-fixed coordinate system through utilization of the laser tracker; s4, obtaining a gravity direction vector, the gravity acceleration and the gravity gradient through utilization of the laser tracker and the atomic clock, and obtaining astro-geodetic deflection of the vertical of the measurement point P, and meridian and prime vertical components of the astro-geodetic deflection of the vertical; and S5, obtaining gravimetric deflection of the vertical of the measurement point P, and the meridian and prime vertical components of the gravimetric deflection of the vertical. The measurement device and method are beneficial for realization of integrated measurement of high-precision deflection of the vertical, gravity acceleration and gravity gradient.

Description

technical field [0001] The invention relates to an integrated measurement device for vertical deviation, gravity acceleration and gravity gradient, and an integrated measurement method for integrated measurement of vertical deviation, gravity acceleration and gravity gradient based on the integrated measurement device. Background technique [0002] Gravitational acceleration is an important geophysical quantity, generally represented by the symbol g. The value of the acceleration of gravity varies in different regions on the earth's surface due to factors such as the earth's altitude, latitude and longitude, and material density. Accurately measuring the value of gravitational acceleration g is of great significance to scientific research, technology research and development, and engineering applications. Accurately measuring the value of gravitational acceleration g is very important for geodesy, geophysics, metrology, earthquake prediction, gravity prospecting and space sc...

AI Technical Summary

Problems solved by technology

[0005] At present, separate instruments and methods are required for the measurement of gravity acceleration, gravity gradient and vertical line deviation, which have the disadvantages of heavy workload, high cost, low measurement efficiency, and inability to integrate measurement.

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