Email this article COMPENSATION OF DESTABILIZING FACTORS INFLUENCE IN THE PROCESS OF DETERMINATION OF THE EARTH MAGNETIC FIELD COMPONENTS USING THE MAGNETOMETER SENSORS
- Authors: Sytnyk A.A.1, Нoncharov A.V.1, Raievskyi N.V.1
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Affiliations:
- Cherkasy State Technological University, Cherkasy
- Issue: No 4 (2014)
- Pages: 44-52
- Section: Technical Sciences
- URL: https://vektornaukitech.ru/jour/article/view/576
- ID: 576
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Abstract
The authors implemented the full-functional procedure of compensation of the influence of destabilizing factors of different nature in the process of determination of the Earth magnetic field components using the magnetometer sensors. This procedure includes the identifying of horizontal components of the Earth magnetic field using the magnetometers as well as the determining of vertical components of the Earth magnetic field strength vector by the dip angle value.
Determination of the horizontal components of the Earth magnetic field involves the compensation of external factors distorting the magnetic field pattern – Hard Iron Distortion and Soft Iron Distortion. The horizontal components of the Earth magnetic field after elimination of the destabilizing factors interferences are used for determination of the astronomical azimuth.
The data got from sensors contain a noise component. The presence of the noise component is a negative factor that must be eliminated. The authors suggested eliminating the noise component using the procedure of filtering the data coming from the sensors in real time mode. For filtering it was offered to apply the classical Kalman filter algorithm allows to achieve the improvement of compass accuracy characteristics and minimize the noise in the desired signal.
The article presents the problem of analytical determination of the vertical component value of the Earth magnetic field strength vector. Dip angle, the roll and pitch angles, and the data obtained from the sensors are used for determination of the vertical component. The vertical component of the Earth magnetic field vector, in its turn, is used to calculate the true azimuth for correction of possible inclination of the platform with sensing elements.
The correct calculation of platform angles of electronic compass is a necessary criterion to determine the true azimuth.
About the authors
Alexandr Alekseevich Sytnyk
Cherkasy State Technological University, Cherkasy
Author for correspondence.
Email: sytnyk_a@mail.ru
candidate of technical sciences, Professor, vice-rector for academic affairs
UkraineArtyom Vladimirovich Нoncharov
Cherkasy State Technological University, Cherkasy
Email: artyom28@gmail.com
candidate of technical sciences, associate professor
UkraineNikolay Vladimirovich Raievskyi
Cherkasy State Technological University, Cherkasy
Email: merkawa@rambler.ru
candidate of technical sciences, associate professor
UkraineReferences
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