Results 11 to 20 of about 269 (142)

Falcon Gravity Gradiometer Technology

open access: yesExploration Geophysics, 2001
BHP Billiton's FALCON airborne gravity gradiometer is a derivative of the Gravity Gradient Instrument (GGI) developed by Bell Aerospace (now Lockheed Martin) between 1975 and 1990. The basis of the GGI design is an accelerometer complement consisting of four accelerometers equi-spaced on a circle with their sensitive axes tangential to the circle. This
exaly   +2 more sources

Analysis of limitations on recovery of gravity field based on satellite gravity gradient data

open access: yesGeodesy and Geodynamics, 2021
Although satellite gravity gradient data plays a great role in determining short-wavelength part of static gravity field model, accuracy of the long-wavelength part of gravity field model recovered by them are poor, which leads to only a few applications
Xiaoyun Wan   +4 more
doaj   +1 more source

Calibration for GOCE Gradiometer Data Based on the Prior Gravity Models [PDF]

open access: yesJournal of Geodesy and Geoinformation Science, 2019
The determination of the calibration parameters of the gravity gradiometer play an important role in the GOCE gravity gradient data processing. In this paper, the temporal signals and outliers in the GOCE gravity gradient observations are analyzed. Based
Qingliang QU,Xiaotao CHANG,Shengwen YU,Guangbin ZHU
doaj   +1 more source

Simultaneously Acquired Magnetoencephalography and Diffuse Optical Tomography Data Reveals Correlated Somatosensory Activity. [PDF]

open access: yesHum Brain Mapp
Fiberoptic probe for simultaneous high‐density diffuse optical tomography (HD‐DOT) and magnetoencephalography (MEG) was constructed and tested in a somatosensory experiment. Equivalent current dipoles were fitted to the MEG data. SI and SII dipole waveform features were extracted and used to localize correlated hemodynamic activity in the postcentral ...
Autti S   +6 more
europepmc   +2 more sources

Experimental analysis of the performance of a new shipboard gravity gradient measurement system

open access: yesFrontiers in Physics, 2023
The gravity gradient tensor, which has a higher resolution than gravity, is used in a variety of fields, including the discovery of energy resources, auxiliary navigation, and national defense building.
Rui Li   +7 more
doaj   +1 more source

Chinese Gravimetry Augment and Mass Change Exploring Mission Status and Future [PDF]

open access: yesJournal of Geodesy and Geoinformation Science, 2023
The satellite gravimetry technology effectively recovers the global Earth’s gravity field. Since 2000s, HL-SST satellite CHAMP, LL-SST satellite GRACE, Gravity Gradient Measurement (GGM) satellite GOCE have been launched successfully, producing some ...
Yun XIAO, Yuanxi YANG, Zongpeng PAN, Yunlong WU, Zehua GUO
doaj   +1 more source

CALIBRATION METHOD FOR GRAVITY GRADIOMETERS BY MEANS OF TWO ROTATING CYLINDERS

open access: yesПриборы и методы измерений, 2015
The problem of maintaining a constant gravitational gradient in a relatively large volume of space is considered.  This  provides  a  well  defined  input  signal  to  a  gravity  gradiometer  for  the  purpose  of  its calibration.
I. Z. Gilavdary, A. Veryaskin
doaj   +1 more source

The possibility of the calibration/validation of the GOCE data with the balloon-borne gradiometer [PDF]

open access: yesAdvances in Geosciences, 2003
A new calibration/validation experiment for GOCE mission is proposed. Simultaneously with the satellite mission another gradiometer will be flown on the board of the stratospheric balloon on the altitude 20–40 km.
J. B. Zieliński, M. S. Petrovskaya
doaj  

STAGES OF DEVELOPMENT AND STATE OF ENGINEERING OF GRAVITY GRADIOMETERS FOR MOVING OBJECTS. (Review)

open access: yesПриборы и методы измерений, 2016
The main steps of creating the gravity gradiometers for the measurement of inhomogineasly of gravitational fields on different mobile carriers, including in conditions of space, are considered on the basis of the analysis of the open literature. The role
I. Z. Gilavdary, N. N. Riznookaya
doaj   +1 more source

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