Results 151 to 160 of about 2,662 (199)
Some of the next articles are maybe not open access.
Superconducting gravity gradiometer for sensitive gravity measurements. II. Experiment
Physical Review D, 1987A sensitive superconducting gravity gradiometer has been constructed and tested. Coupling to gravity signals is obtained by having two superconducting proof masses modulate magnetic fields produced by persistent currents. The induced electrical currents are differenced by a passive superconducting circuit coupled to a superconducting quantum ...
, Chan, , Moody, , Paik
openaire +2 more sources
Gravity gradiometer integrated inertial navigation
2013 European Control Conference (ECC), 2013In high precision inertial navigation, gravity field modeling error becomes a limiting factor. Granted that high precision accelerometers are used, airborne gravity gradiometry can be employed in a self-contained way to accurately estimate the gravity field on the fly and eliminate the gravity field modeling error.
Troy C. Welker +2 more
openaire +1 more source
Performance of airborne gravity gradiometers
The Leading Edge, 2013Airborne gravity gradiometry (AGG) is becoming a widely accepted tool in exploration. It provides rapid acquisition of accurate gravity data at high spatial resolution with complete coverage over large areas. The data are of significant value to explorers for a wide range of commodities throughout the world.
Mark H. Dransfield +1 more
openaire +1 more source
Noise reduction procedures for gravity-gradiometer data
GEOPHYSICS, 2014Noise suppression of airborne gravity-gradiometer data is a crucial part of the data processing stream. We considered two approaches to removing noise: kriging and directional filtering. Kriging is an estimation procedure for the interpolation of spatial data. The estimator is calculated from the data variogram, which characterizes the noise level and
Mark Pilkington*, Pejman Shamsipour
openaire +2 more sources
Superconducting tensor gravity gradiometer
Journal of Geodesy, 1981A sensitive gravity gradiometer can provide much needed gravity data of the earth and improve the accuracy of inertial navigation. A complete determination of all five independent components of the gravity gradient tensor is possible in principle by rotating a single in-line component gradiometer.
openaire +1 more source
Precision gravity gradiometer/AUV system
Proceedings of the 1998 Workshop on Autonomous Underwater Vehicles (Cat. No.98CH36290), 2002Unprecedented stealth in navigation at sea, both long and short term, is now achievable through the integration of a gradiometer/gravimeter inertial navigation system into an appropriate submersible platform. Several key accomplishments have advanced the technology of gravity and gradiometry.
M.S. Goldstein, J.J. Brett
openaire +1 more source
Planar Electrostatic Gravity Gradiometer GREMLIT
2023Based on the strong experience acquired through the development of ultra-sensitive electrostatic accelerometers for the GRACE, GOCE and GRACE FOLLOW-ON satellite gravity missions, ONERA is developing a new concept of gravity gradiometer (GREMLIT) for airborne survey.
Nolwenn Portier +5 more
openaire +1 more source
Passive gravity gradiometer navigation system
IEEE Symposium on Position Location and Navigation. A Decade of Excellence in the Navigation Sciences, 2002A totally passive navigation system using gravity gradient map matching techniques is described. The system requires no external information and is nonemanating and nonjammable. The system consists of an inertial system updated by position fixing from map matching to gravity gradiometer outputs.
C.A. Affleck, A. Jircitano
openaire +1 more source
A prototype superconducting gravity gradiometer
IEEE Transactions on Magnetics, 1985We report the successful laboratory test of a single-axis gradiometer designed to measure a diagonal component of the earth's gravitational gradient tensor. It Consists of a pair of accelerometers mounted with their sensitive axes vertical and in line.
F. van Kann +3 more
openaire +1 more source
Gravity field approximation using airborne gravity gradiometer data
Journal of Geophysical Research: Solid Earth, 1992A set of airborne Gravity Gradiometer Survey System (GGSS) data was used in combination with the OSU89B geopotential model to predict gravity anomalies and deflections of the vertical. The gradiometer data were collected during an airborne survey of the GGSS in the Texas/Oklahoma area.
D. Arabelos, I. N. Tziavos
openaire +1 more source