scholarly journals Rigorous evaluation of the edge-focusing wiggler based on the magnetic field measurement

2009 ◽  
Vol 12 (12) ◽  
Author(s):  
Shigeru Kashiwagi ◽  
Ryukou Kato ◽  
Akihito Mihara ◽  
Takanori Noda ◽  
Goro Isoyama ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Field Measurement ◽  
Magnetic Field Measurement ◽  
Rigorous Evaluation ◽  
The Magnetic Field

scholarly journals Attitude Estimation of Underwater Vehicles Using Field Measurements and Bias Compensation

Sensors ◽  
2019 ◽  
Vol 19 (2) ◽  
pp. 330 ◽  
Author(s):  
Nak Ko ◽  
Seokki Jeong ◽  
Suk-seung Hwang ◽  
Jae-Young Pyun
Keyword(s):  
Magnetic Field ◽  
Field Measurement ◽  
Field Measurements ◽  
Underwater Vehicle ◽  
Field Vector ◽  
Attitude Estimation ◽  
Magnetic Field Measurement ◽  
Euler Angles ◽  
Measured Field ◽  
The Magnetic Field

This paper proposes a method of estimating the attitude of an underwater vehicle. The proposed method uses two field measurements, namely, a gravitational field and a magnetic field represented in terms of vectors in three-dimensional space. In many existing methods that convert the measured field vectors into Euler angles, the yaw accuracy is affected by the uncertainty of the gravitational measurement and by the uncertainty of the magnetic field measurement. Additionally, previous methods have used the magnetic field measurement under the assumption that the magnetic field has only a horizontal component. The proposed method utilizes all field measurement components as they are, without converting them into Euler angles. The bias in the measured magnetic field vector is estimated and compensated to take full advantage of all measured field vector components. Because the proposed method deals with the measured field independently, uncertainties in the measured vectors affect the attitude estimation separately without adding up. The proposed method was tested by conducting navigation experiments with an unmanned underwater vehicle inside test tanks. The results were compared with those obtained by other methods, wherein the Euler angles converted from the measured field vectors were used as measurements.

A rotating coil probe for the magnetic field measurement on a long pulsed tokamak

1999 ◽  
Vol 70 (1) ◽  
pp. 445-448 ◽  
Author(s):  
J. Fujita ◽  
K. Matsuura ◽  
K. Kawahata ◽  
S. Fujiwaka ◽  
S. Itoh ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Field Measurement ◽  
Magnetic Field Measurement ◽  
The Magnetic Field

Diagnostic method for the magnetic field measurement in the plasma focus device

1989 ◽  
Vol 31 (4) ◽  
pp. 587-594 ◽  
Author(s):  
S Czekaj ◽  
A Kasperczuk ◽  
R Miklaszewski ◽  
M Paduch ◽  
T Pisarczyk ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Plasma Focus ◽  
Field Measurement ◽  
Diagnostic Method ◽  
Plasma Focus Device ◽  
Magnetic Field Measurement ◽  
The Magnetic Field

The Magnetic Field Sensor on the Base of Ybacuo Ceramics with Sharp Jump of Magnetic Reply

1996 ◽  
Vol 430 ◽  
Author(s):  
Kh. R. Rostami ◽  
A. A. Sukhanov ◽  
V. V. Mantorov
Keyword(s):  
Magnetic Field ◽  
Field Measurement ◽  
Critical Magnetic Field ◽  
Measurement Methods ◽  
Magnetic Field Sensor ◽  
Magnetic Field Measurement ◽  
Field Sensor ◽  
The Magnetic Field

AbstractThe magnetic field sensor with sensitivity 10−3 Oe and work temperature 77°K is created on the base of YBaCuO ceramics having a sharp jump of the diamagnetic moment in the region of the first Josephson critical magnetic field. The magnetic field measurement methods and the sensor principle are described. Ways to improve the obtained results are indicated.

Influence of Shielding on the Magnetic Field Measurement by Direct H-Coil Method in a Double-Yoked SST

2018 ◽  
Vol 54 (3) ◽  
pp. 1-4
Author(s):  
Benjamin J. Mailhe ◽  
Ricardo de Araujo Elias ◽  
Indiara Pitta Correa da Silva ◽  
Nelson Sadowski ◽  
Nelson J. Batistela ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Field Measurement ◽  
Magnetic Field Measurement ◽  
Coil Method ◽  
The Magnetic Field

scholarly journals The magnetic field experiment onboard Equator-S and its scientific possibilities

1999 ◽  
Vol 17 (12) ◽  
pp. 1521-1527 ◽  
Author(s):  
K.-H. Fornacon ◽  
H. U. Auster ◽  
E. Georgescu ◽  
W. Baumjohann ◽  
K.-H. Glassmeier ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Field Measurement ◽  
Magnetic Field Measurement ◽  
Fluxgate Magnetometer ◽  
Independent Field ◽  
Instruments And Techniques ◽  
Calibration Techniques ◽  
First Time ◽  
The Magnetic Field ◽  
Magnetic Field Experiment

Abstract. The special feature of the ringcore fluxgate magnetometer on Equator-S is the high time and field resolution. The scientific aim of the experiment is the investigation of waves in the 10–100 picotesla range with a time resolution up to 64 Hz. The instrument characteristics and the influence of the spacecraft on the magnetic field measurement will be discussed. The work shows that the applied pre- and inflight calibration techniques are sufficient to suppress spacecraft interferences. The offset in spin axis direction was determined for the first time with an independent field measurement by the Equator-S Electron Drift Instrument. The data presented gives an impression of the accuracy of the measurement.Key words. Magnetospheric physics (instruments and techniques) · Space plasma physics (instruments and techniques)

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