Effect upon vehicle position precision of errors in measuring magnetic field device

Author

Yu, Huang ; Feng, Sun ; Ling, Hao Yan

Author_Institution

Coll. of Sci., Harbin Eng. Univ., Harbin, China

fYear

2009

fDate

16-19 Aug. 2009

Abstract

The relative position between magnetic target and the device, which is installed on vehicle under water, is determined by measuring magnetic field magnitude and its gradient of target on condition that geomagnetic field anomaly can be viewed as a magnetic dipole object. The errors of measuring magnetic field and its gradient caused by nonorthogonality between axes, different sensitivity of each axis, and installation center departure of magnetometers are analyzed in theoretically. These errors of magnetic field magnitude and its gradient can act effect on the localization precision of underwater vehicle, which is analyzed theoretically and simulation numerically. These results show that magnetometer performances such as nonorthogonality between axes, and different sensitivity of each axis have the remarkable influence on the localization precision.

Keywords

error analysis; geophysical techniques; magnetometers; position measurement; underwater vehicles; magnetic dipole object; magnetic field device; underwater vehicle localization precision; vehicle position errors precision; Analytical models; Geomagnetism; Magnetic analysis; Magnetic devices; Magnetic field measurement; Magnetometers; Marine vehicles; Numerical simulation; Position measurement; Underwater vehicles; Magnetic dipole; Magnetic field gradient; localization error; magnetometer;

fLanguage

English

Publisher

ieee

Conference_Titel

Electronic Measurement & Instruments, 2009. ICEMI '09. 9th International Conference on

Conference_Location

Beijing

Print_ISBN

978-1-4244-3863-1

Electronic_ISBN

978-1-4244-3864-8

Type

conf

DOI

10.1109/ICEMI.2009.5274680

Filename

5274680