An improved torque type gravity gradiometer with dynamic modulation
Sign Up to like & getrecommendations! Published in 2017 at "Acta Geodaetica et Geophysica"
DOI: 10.1007/s40328-017-0202-z
Abstract: Abstract Traditional torque type gravity gradiometer has an important pole in gravity gradient measurements, while it is relatively inefficient and with the precision of about 1 E mainly caused by the static operating mode. In… read more here.
Keywords: dynamic modulation; gravity gradiometer; torque type; gradiometer ... See more keywords
Simulation-based evaluation of a cold atom interferometry gradiometer concept for gravity field recovery
Sign Up to like & getrecommendations! Published in 2017 at "Advances in Space Research"
DOI: 10.1016/j.asr.2017.12.005
Abstract: Abstract The prospects of future satellite gravimetry missions to sustain a continuous and improved observation of the gravitational field have stimulated studies of new concepts of space inertial sensors with potentially improved precision and stability.… read more here.
Keywords: cold atom; atom interferometry; field; gradiometer ... See more keywords
Magnetoelectric gradiometer with enhanced vibration rejection efficiency under H-field modulation
Sign Up to like & getrecommendations! Published in 2018 at "Journal of Applied Physics"
DOI: 10.1063/1.5017726
Abstract: A magnetoelectric (ME) gradiometer consisting of two Metglas/Pb(Zr,Ti)O3 fiber-based sensors has been developed. The equivalent magnetic noise of both sensors was first determined to be about 60 pT/√Hz while using an H-field modulation technique. The… read more here.
Keywords: vibration rejection; vibration; gradiometer; field modulation ... See more keywords
Overhauser Sensor Array Based 3-D Magnetic Gradiometer for the Detection of Shallow Subsurface Unexploded Ordnance
Sign Up to like & getrecommendations! Published in 2023 at "IEEE Transactions on Instrumentation and Measurement"
DOI: 10.1109/tim.2023.3277942
Abstract: The information on the high-precision and multidirectional magnetic gradient is highly relevant to detecting and locating shallow subsurface unexploded ordnance (UXO). In this article, the design of a 3-D Overhauser magnetic gradiometer is presented. Taking… read more here.
Keywords: magnetic gradiometer; gradiometer; sensor array; shallow subsurface ... See more keywords
Design and Demonstration of Novel Magnetoencephalogram Detectors
Sign Up to like & getrecommendations! Published in 2019 at "IEEE Transactions on Magnetics"
DOI: 10.1109/tmag.2019.2895399
Abstract: Brain activities have attracted considerable attention in medical and healthcare areas and engineering applications. Magnetoencephalogram (MEG) is a non-invasive technique for mapping and evaluating the functional activity of the brain. It is commonly measured by… read more here.
Keywords: activity; gradiometer; measurement; design demonstration ... See more keywords
All-optical intrinsic atomic gradiometer with sub-20 fT/cm/√Hz sensitivity in a 22 µT earth-scale magnetic field.
Sign Up to like & getrecommendations! Published in 2020 at "Optics express"
DOI: 10.1364/oe.408486
Abstract: In this work we demonstrate a high sensitivity atomic gradiometer capable of operation in earth-field level environments. We apply a light-pulse sequence at four times the Larmor frequency to achieve gradiometer sensitivity read more here.
Keywords: field; gradiometer; sensitivity; optical intrinsic ... See more keywords