Three-Dimensional Magnetic Field Vector Measurement Using Fiber Mounted Magneto-optic Probe

2012 ◽  
Author(s):  
Jun Zhu ◽  
Shilie Zheng ◽  
Xiaofeng Jin ◽  
Hao Chi ◽  
Xianmin Zhang
Keyword(s):  
Magnetic Field ◽  
Three Dimensional ◽  
Field Vector ◽  
Magnetic Field Vector ◽  
Vector Measurement ◽  
Optic Probe ◽  
Magneto Optic

scholarly journals Three-dimensional sensing of the magnetic-field vector by a compact planar-type Hall device

2021 ◽  
Vol 2 (1) ◽  
Author(s):  
Junichi Shiogai ◽  
Kohei Fujiwara ◽  
Tsutomu Nojima ◽  
Atsushi Tsukazaki
Keyword(s):  
Magnetic Field ◽  
Rapid Development ◽  
Three Dimensional ◽  
Field Vector ◽  
Polar Coordinates ◽  
Magnetic Field Vector ◽  
Planar Geometry ◽  
Topological Features ◽  
The Magnetic Field ◽  
Compact Planar

AbstractSmart society is forthcoming with a rapid development in the automation of electric appliances requiring abundant sensors. One of the key sensors is a three-dimensional magnetometer for detecting the motion of objects, which is usually driven by cooperative multiple sensors on three orthogonal planes. Here, we demonstrate the fundamental operation of a three-dimensional magnetometer based on a simple Fe-Sn heterostructure Hall device in a planar geometry. Polar coordinates of the magnetic-field vector are uniquely determined by the combination of the sizable anomalous Hall effect, the anisotropic magnetoresistance, and the unidirectional magnetoresistance. Thanks to the ferromagnetic topological features in the Fe-Sn heterostructure, the above-mentioned device overcomes the limitation of conventional semiconductor devices and is highly sensitive even at room temperature. The compact planar geometry will be particularly useful in versatile electrical applications requiring a low-cost three-dimensional magnetometer with space- and energy-saving features.

Determination of the Three-Dimensional Magnetic Field Vector Orientation with Nitrogen Vacany Centers in Diamond

Nano Letters ◽  
2020 ◽  
Vol 20 (5) ◽  
pp. 2980-2985 ◽  
Author(s):  
Timo Weggler ◽  
Christian Ganslmayer ◽  
Florian Frank ◽  
Tobias Eilert ◽  
Fedor Jelezko ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Three Dimensional ◽  
Field Vector ◽  
Magnetic Field Vector ◽  
Vector Orientation

Novel Method for Magnetic Field Vector Measurement Based on Dual-Axial Tunneling Magnetoresistive Sensors

2017 ◽  
Vol 53 (8) ◽  
pp. 1-6 ◽  
Author(s):  
Gen Zhao ◽  
Jun Hu ◽  
Yong Ouyang ◽  
Wenzhi Chang ◽  
Zhongxu Wang ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Field Vector ◽  
Magnetic Field Vector ◽  
Vector Measurement ◽  
Magnetoresistive Sensors ◽  
Novel Method

Measurement of Cardiac Magnetic Field Vector

1989 ◽  
pp. 425-428 ◽  
Author(s):  
Y. Sakauchi ◽  
H. Kado ◽  
N. Awano ◽  
N. Kasai ◽  
M. Higuchi ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Field Vector ◽  
Magnetic Field Vector

scholarly journals Evaluation of Murrell’s EKF-Based Attitude Estimation Algorithm for Exploiting Multiple Attitude Sensor Configurations

Sensors ◽  
2021 ◽  
Vol 21 (19) ◽  
pp. 6450
Author(s):  
Sharanabasaweshwara Asundi ◽  
Norman Fitz-Coy ◽  
Haniph Latchman
Keyword(s):  
Magnetic Field ◽  
Time Derivative ◽  
Estimation Algorithm ◽  
Field Vector ◽  
Attitude Estimation ◽  
Magnetic Field Vector ◽  
Sun Sensor ◽  
Satellite Attitude ◽  
Multiple Sensor ◽  
Sensor Suite

Pico- and nano-satellites, due to their form factor and size, are limited in accommodating multiple or redundant attitude sensors. For such satellites, Murrell’s implementation of the extended Kalman filter (EKF) can be exploited to accommodate multiple sensor configurations from a set of non redundant attitude sensors. The paper describes such an implementation involving a sun sensor suite and a magnetometer as attitude sensors. The implementation exploits Murrell’s EKF to enable three sensor configurations, which can be operationally commanded, for satellite attitude estimation. Among the three attitude estimation schemes, (i) sun sensor suite and magnetometer, (ii) magnetic field vector and its time derivative and (iii) magnetic field vector, it is shown that the third configuration is better suited for attitude estimation in terms of precision and accuracy, but can consume more time to converge than the other two.

scholarly journals Improvement of the Helioseismic and Magnetic Imager (HMI) Vector Magnetic Field Inversion Code

2021 ◽  
Vol 923 (1) ◽  
pp. 84
Author(s):  
Ana Belén Griñón-Marín ◽  
Adur Pastor Yabar ◽  
Yang Liu ◽  
J. Todd Hoeksema ◽  
Aimee Norton
Keyword(s):  
Magnetic Field ◽  
Field Vector ◽  
Magnetic Field Vector ◽  
Solar Dynamics Observatory ◽  
Filling Fraction ◽  
Resolution Element ◽  
New Strategy ◽  
Moderate Field ◽  
Solar Dynamics ◽  
Field Strengths

Abstract A spectral line inversion code, Very Fast Inversion of the Stokes Vector (VFISV), has been used since 2010 May to infer the solar atmospheric parameters from the spectropolarimetric observations taken by the Helioseismic and Magnetic Imager (HMI) on board the Solar Dynamics Observatory. The magnetic filling factor, the fraction of the surface with a resolution element occupied by magnetic field, is set to have a constant value of 1 in the current version of VFISV. This report describes an improved inversion strategy for the spectropolarimetric data observed with HMI for magnetic field strengths of intermediate values in areas spatially not fully resolved. The VFISV inversion code has been modified to enable inversion of the Stokes profiles with two different components: one magnetic and one nonmagnetic. In this scheme, both components share the atmospheric components except for the magnetic field vector. In order to determine whether the new strategy is useful, we evaluate the inferred parameters inverted with one magnetic component (the original version of the HMI inversion) and with two components (the improved version) using a Bayesian analysis. In pixels with intermediate magnetic field strengths (e.g., plages), the new version provides statistically significant values of filling fraction and magnetic field vector. Not only does the fitting of the Stokes profile improve, but also the inference of the magnetic parameters and line-of-sight velocity are obtained uniquely. The new strategy is also proven to be effective for mitigating the anomalous hemispheric bias in the east–west magnetic field component in moderate field regions.

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