Results 151 to 160 of about 6,905 (192)

The German airborne SQUID tensor magnetic gradiometer

8th International Congress of the Brazilian Geophysical Society, 2003
Eighth International Congress of the Brazilian Geophysical Society, September 14 - 18, 2003, Rio de Janeiro ...
Nelson, B., Stolz, R., Schulz, M., Chwala, A., Meyer, H. -G., Rothenback, M.   +5 more
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Magnetic Gradiometer Inversion for Underwater Magnetic Object Parameters

OCEANS 2006 - Asia Pacific, 2006
Inversion of magnetometer measurement data can provide the user with valuable information for localization. This paper presents an approach to invert for information relating to a magnetic object's using data collected by a magnetic gradiometer. In this study the object's magnetic parameters are determined via an iterative search process by means of ...
Y. H. Pei, H. G. Yeo
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Magnetic gradiometer for underwater detection applications

SPIE Proceedings, 2006
We have designed and constructed a magnetic gradiometer for underwater mine detection, location and tracking. The United States Naval Surface Warfare Center (NSWC PC) in Panama City, FL has conducted sea tests of the system using an unmanned underwater vehicle (UUV).
S. Kumar, D. C. Skvoretz, C. R. Moeller, M. J. Ebbert, A. R. Perry, R. K. Ostrom, A. Tzouris, S. L. Bennett, P. V. Czipott, G. Sulzberger, G. I. Allen, J. Bono, T. R. Clem   +12 more
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Cryogenic Magnetic Gradiometers for Space Applications

IEEE Transactions on Geoscience and Remote Sensing, 1985
This article proposes the use of superconducting magneticgradiometer, magnetometer sensors based on SQUID technology as sensorsfor space-borne magnetic investigations. The existing state of theart of such sensors is described. Estimates of their performance as spacesensors is made; in particular, it is shown that they will provide magneticdata of ...
Roger Hastings, Ronald Mahler, Ray Schneider, James Eraker   +3 more
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Differential readout for a magnetic gradiometer

Sensors and Actuators A: Physical, 2009
Abstract A magnetic gradiometer system being developed by the authors uses a vibrating string as its sensing element. The next generation of sensor will use a wide ribbon instead of a string. In order to precisely measure the displacement of the ribbon we have designed a new differential capacitive readout with displacement noise below 1 0 −
Andrew Sunderland, Alexey V. Veryaskin, Howard Golden, Wayne McRae, Li Ju, David G. Blair   +5 more
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Mathematical modeling of fluxgate magnetic gradiometers

Optoelectronics, Instrumentation and Data Processing, 2017
Issues of designing fluxgate magnetic gradiometers are considered. The areas of application of fluxgate magnetic gradiometers are determined. The structure and layout of a two-component fluxgate magnetic gradiometer are presented. It is assumed that the fluxgates are strictly coaxial in the gradiometer body.
D. G. Milovzorov, V. Kh. Yasoveev
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Active Tensor Magnetic Gradiometer System

2007
Abstract : This report summarizes the work and results achieved under SERDP project MM-1514 entitled, Active Tensor Magnetic Gradiometer System. The objective of the project was to prove the concept of an active tensor magnetic gradiometer system (ATMGS) using physics-based models and systems-based real-world simulations.
S. R. Hutton, Jeffrey D. Phillips, David V. Smith   +2 more
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Invariant Calibration of Magnetic Tensor Gradiometers

IEEE Magnetics Letters, 2017
Magnetic tensor gradiometers are based on multiple sensors arranged in a unified coordinate system. Current calibration methods focus on each gradient tensor component separately, rather than the entire tensor system, so the advantages of tensor measurement are not completely realized.
Yangyi Sui, Shibin Liu, Zhijian Zhou, Yanzhang Wang, Defu Cheng   +4 more
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A portable single axis magnetic gradiometer

Sensors and Actuators A: Physical, 2001
Abstract The single axis magnetic gradiometer based on two compact detector compensation (CDC) fluxgate ringcore sensors separated 20 cm is described. Despite its high stability and precision better than 1 nT, the calibration procedures are not straightforward. Firstly, the mono-axial measurement does not provide vector information about the magnetic
J.M.G. Merayo, J.R. Petersen, O.V. Nielsen, F. Primdahl, P. Brauer   +4 more
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THE GULF AIRBORNE MAGNETIC GRADIOMETER

GEOPHYSICS, 1954
An instrument capable of measuring magnetic gradients as encountered in airborne magnetometer operations has possible applications as an interpretational aid. Its usefulness, particularly for qualitative analysis, will be discussed briefly. The design of a spatial‐type airborne gradiometer of adequate precision can be shown to be quite impractical. An
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