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Acoustic and vibration isolation for a gravity gradiometer
Review of Scientific Instruments, 2022Vibration in the audio frequency band affects the performance of rotating gravity gradiometers used for airborne mineral exploration. This is probably due to translation to rotation coupling inside the gradiometer platform. It was found that the DC gravity gradient signal was proportional to the square of the third time derivative of position, or jerk ...
A. Sunderland +6 more
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Calibration of gravity gradiometer with centrifuge
2017 14th International Computer Conference on Wavelet Active Media Technology and Information Processing (ICCWAMTIP), 2017The calibration of the gravity gradiometer is of great significance for improving the accuracy of the gravitational gradient measurement. The calibration method used now is complicated and time-consuming. In this paper, a new method of calibration for gravity gradiometer based on centrifuge is presented. In the new method, the gradiometer is calibrated
Hongwei Wei, Meiping Wu
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Gravity gradiometer with coupled superconducting suspensions
Cryogenics, 1992Abstract The analysis of superconducting suspensions and SQUID- and cavity resonator-based superconducting gravity gradiometers on their basis have been carried out. In the gravity gradiometers designed to operate on a movable base it was found advantageous to use the suspensions with in-series connected superconducting coils.
Victor A. Charkin, Alexander E. Pischits
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Dynamics of Onboard Gravity Gradiometers
Giroskopiya i Navigatsiya, 2019The paper addresses the dynamics of on-board gravity gradiometers for measuring the second derivatives of the geopotential. Mathematical models of accelerometer and dumbbell versions of the devices are developed, and their instrumental errors are analyzed.
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Applications of an orbiting gravity gradiometer
Bulletin Géodésique, 1983Considering present attempts to develop a gradiometer with an accuracy between 10−3 E and 10−4 E, two applications for such a device have been studied: (a) mapping the gravitational field of the Earth, and (b) estimating the geocentric distance of a satellite carrying the instrument.
Oscar L. Colombo, Alfred Kleusberg
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Prototype Moving Base Gravity Gradiometer
1973Abstract : The report covers the technical studies accomplished during the first six months to design and develop a prototype moving base gravity gradiometer. The scope of work is limited to establishing the instrument and system design parameters during the time period covered by this report.
David W. Rouse +4 more
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Gravity Gradiometer Data Reduction
1973Two existing gravity gradiometers are discussed and a single signal equation is developed for both instruments. Equations are derived for calculating the gradiometer signal from known spherical harmonic coefficients. The result is a signal equation in the same form as the harmonic expansion but with a "gradiometer" polynomial.
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Performance of a superconducting gravity gradiometer
Physica B: Condensed Matter, 1994Abstract We report the laboratory operation of an rf SQUID-based superconducting gravity gradiometer designed to measure from an aircraft, off-diagonal components of the earth's gravity gradient tensor. A detailed numerical model of the multi-mode electromechanical system shows excellent agreement with the experimental observations.
F.J. van Kann +3 more
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Three-axis superconducting gravity gradiometer for sensitive gravity experiments
Review of Scientific Instruments, 2002Superconducting differential accelerometers have been used to test Newton’s inverse square law and have been proposed for other sensitive experiments. These include searches for spin-mass coupling, detecting Earth’s gravitomagnetic field, and testing the Equivalence Principle.
M. Vol Moody +2 more
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The Falcon Airborne Gravity Gradiometer for Engineering Applications
Symposium on the Application of Geophysics to Engineering and Environmental Problems 2010, 2010While airborne gravity has been available for decades, only with the advent of airborne gravity gradiometry (AGG), and specifically the FALCON AGG installed in a helicopter, has airborne gravity measurement reached a sensitivity and spatial resolution that can be effective for a wide range of engineering applications. Survey examples and gravity models
Greg Hodges +2 more
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