Results 71 to 80 of about 2,662 (199)
Determination of the Newtonian Gravitational Constant Using Atom Interferometry
, 2008 We present a new measurement of the Newtonian gravitational constant G based on cold atom interferometry. Freely falling samples of laser-cooled rubidium atoms are used in a gravity gradiometer to probe the field generated by nearby source masses.
A. Bertoldi +5 more
core +1 more source
On estimating gravity anomalies from gradiometer data [PDF]
The Gravsat-gradiometer mission involves flying a gradiometer on a gravity satellite (Gravsat) which is in a low, polar, and circular orbit. Results are presented of a numerical simulation of the mission which demonstrates that, if the satellite is in a ...
Argentiero, P., Garza-Robles, R.
core +1 more source
Simulation of a lunar gradiometer mission [PDF]
A lunar gradiometer mission involves the mounting of a gradiometer on a satellite which is in a low, polar, and circular lunar orbit. The results of a numerical simulation of the mission is presented. It is shown that if the satellite is in a 50 km orbit,
Argentiero, P. D., Garza-Robles, R.
core +1 more source
Gravity gradient preliminary investigations on exhibit ''A'' Final report [PDF]
Quartz microbalance gravity gradiometer performance ...
Houston, M. H. +3 more
core +1 more source
Journal of Geodetic Science, 2012 With the gravity field and steady-state ocean circulation explorer (GOCE) (preferably combined with the gravity field and climate experiment (GRACE)) a new generation of geoid models will become available for use in height determination.
Rummel R.
doaj +1 more source
A spacecraft-borne gradiometer mission analysis [PDF]
Numerical simulations were performed to obtain the orbit- and attitude-determination requirements of a spacecraft-borne gradiometer mission. Results demonstrated that position determination of 300 meters in the along-track and cross-track directions and ...
Argentiero, P., Garza-Robles, R.
core +1 more source
GOCE gradients in various reference frames and their accuracies [PDF]
Advances in Geosciences, 2003 The objective of GOCE (Gravity Field and Steady-State Ocean Circulation Explorer) is the determination of the Earth’s gravity field with high spatial resolution.
J. Müller, M. Wermut
doaj
Gravity Gradiometer Systems – Advances and Challenges
ASEG Extended Abstracts, 2007 Gravity gradiometry has been heralded as one of the top five developments in advancing airborne geophysics in the past decade. There are presently nine deployed gradiometer systems operating in various configurations (partial tensor and full tensor) on numerous platforms in support of global exploration activities.
Dan DiFrancesco +2 more
openaire +1 more source
Design of an Integrated MEMS Magnetic Gradiometer Rejecting Vibrations and Stray Fields
IEEE Journal of the Electron Devices SocietyMagnetic sensors are often used near current-carrying wires or electrical motors generating significant magnetic interference. To mitigate the effects of these stray fields, the traditional design approach relies on a differential sensing scheme ...
Enrico Gasparin +7 more
doaj +1 more source
Atom interferometry with the Sr optical clock transition
, 2017 We report on the realization of a matter-wave interferometer based on single-photon interaction on the ultra-narrow optical clock transition of strontium atoms. We experimentally demonstrated its operation as a gravimeter and as a gravity gradiometer. No
Hu, Liang +3 more
core +1 more source