Results 261 to 270 of about 143,454 (291)

High-resolution numerical modelling of the altimetry-derived gravity disturbances and disturbing gradients

2020
<p>Recent high-resolution mean sea surface models obtained from satellite altimetry in a combination with the GRACE/GOCE-based global geopotential models provide valuable information for detailed modelling of the altimetry-derived gravity data.
Róbert Čunderlík, Marek Macák, Michal Kollár, Karol Mikula   +3 more
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Ellipsoidal vertical deflections and ellipsoidal gravity disturbance: Case studies

Studia Geophysica et Geodaetica, 2006
First, we present three different definitions of the vertical which relate to (i) astronomical longitude and astronomical latitude as spherical coordinates in gravity space, (ii) Gauss surface normal coordinates (also called geodetic coordinates) of type ellipsoidal longitude and ellipsoidal latitude and (iii) Jacobi ellipsoidal coordinates of type ...
E. E. Grafarend, G. Finn, A. A. Ardalan
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Estimating the Gravity Disturbance Vector from Airborne Gravimetry

2002
In the past five years, considerable progress has been made in improving the accuracy of scalar gravimetry by integrated INS/DGPS sys- tems, both of the strapdown and the stable platform system type. Less attention has been given to vec- tor gravimetry and the results that have been pub- lished are much poorer in comparison.
K. P. Schwarz, M. Kern, S. M. Nassar
openaire   +1 more source

Gravity-Assisted, Passive Cancellation of Disturbances for Inertial Sensors

Volume 4A: Dynamics, Vibration and Control, 2013
Continuing enhancements in Microsystem Technologies facilitate the development of inertial sensors — accelerometers and gyroscopes — of unprecedented performance to cost ratio and broaden the frontiers of their application. Of particular interest, because of their immunity to ambient disturbances, are sensors equipped with high resolution Electro ...
Taras Karpachevskyy, Swavik Spiewak
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Gravity driven disturbances during bridgman crystal growth in space

Acta Astronautica, 2000
Abstract The purpose of this paper is to analyse the crystal growth experiments performed under microgravity conditions in order to learn, with the help of the existing theory, the degree to which residual convective level acts on chemical segregation.
Thierry Duffar, Jean-Paul Garandet
openaire   +1 more source

Rotational disturbance in laser-interferometric gravity gradiometry

Physica Scripta
Abstract Laser interferometers have been used for precise measurements of gravity and related effects. These include experiments to search for a fifth force and absolute ballistic gravimeters, which use a Michelson-type laser interferometer to measure the acceleration of a free-falling test mass.
openaire   +1 more source

Satellite-Planet Gravity Disturbance Optimization

Satellite orbits under the influence of planetary gravity, influenced by the perturbations of companion stars, exhibit complex dynamic characteristics, including changes in orbital eccentricity, adjustments in orbital inclination, and periodic resonance effects.
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A Modified Karhunen-Loeve Model of Gravity Disturbance Vector

IEEE Transactions on Aerospace and Electronic Systems, 1986
A modified anisotropic Karhunen-Loeve (KL) model for the gravity disturbing potential is proposed. This model, unlike the previous KL model of Bose, does not vanish on the boundaries of a local region. Laplace's equation for the gravity disturbing potential and flatearth Vening-Meinesz relationships of the gravity disturbance vectorcomponents (?,?,?g ...
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Solvable models of quantum black holes: a review on Jackiw–Teitelboim gravity

Living Reviews in Relativity, 2023
Thomas Mertens, Gustavo Joaquin Turiaci
exaly  

Lunar Disturbance of Gravity

Scientific American, 1882
openaire   +1 more source