English
 
Privacy Policy Disclaimer
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT
Add to Basket
  Local TagsRelease HistoryDetailsSummary

Released
Conference Paper

Motorized declination inclination theodolite for automatic absolute magnetic measurements

Authors

Hegymegi,  Laszlo
IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations;

Merényi,  László
IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations;

Pazonyi,  János
IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations;

Szöllősy,  János
IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations;

Domján,  Ádám
IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations;

Hegymegi,  Csaba
IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations;

Vereb,  György
IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations;

External Ressource
No external resources are shared
Fulltext (public)
There are no public fulltexts stored in GFZpublic
Supplementary Material (public)
There is no public supplementary material available
Citation

Hegymegi, L., Merényi, L., Pazonyi, J., Szöllősy, J., Domján, Á., Hegymegi, C., Vereb, G. (2023): Motorized declination inclination theodolite for automatic absolute magnetic measurements, XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG) (Berlin 2023).
https://doi.org/10.57757/IUGG23-4677


Cite as: https://gfzpublic.gfz-potsdam.de/pubman/item/item_5021086
Abstract
Most of the geomagnetic observatories use fluxgate vector magnetometer to measure geomagnetic field variation. This instrument is a relative instrument where the measured value relates to the baseline of the instrument which changes with time. To know the absolute value of the magnetic field component it is necessary to determine the baseline value from time to time. According to the general observatory routine the absolute value of the field is measured by a declination/inclination theodolite (DIM), once a week. This measurement is a relatively complicated procedure and needs well trained observer. To overcome this difficulty a new automatic digital nonmagnetic theodolite was designed and built to carry out regular absolute observations. This instrument can be used also on remote places where personal presence cannot be assured. The new instrument is based on a ZEISS optical theodolite converted to steel free and optical angle measuring system was replaced by digital reading system. A digital camera was fixed on the telescope to find the azimuth mark giving reference to the geographic coordinate system.The paper presents a general description of the new instrument, called automatic digital station (ADS). together with the results of its experimental operation. It discusses the differences between the requirements of ADS and DIM explaining the advantages of ADS. Presents the details of a completely automatic unmanned geomagnetic observatory.