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  Motorized declination inclination theodolite for automatic absolute magnetic measurements

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

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Item Permalink: https://gfzpublic.gfz-potsdam.de/pubman/item/item_5021086 Version Permalink: https://gfzpublic.gfz-potsdam.de/pubman/item/item_5021086_3
Genre: Conference Paper

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 Creators:
Hegymegi, Laszlo1, Author
Merényi, László1, Author
Pazonyi, János1, Author
Szöllősy, János1, Author
Domján, Ádám1, Author
Hegymegi, Csaba1, Author
Vereb, György1, Author
Affiliations:
1IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations, ou_5011304              

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 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.

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Language(s): eng - English
 Dates: 2023-07-112023-07-11
 Publication Status: Finally published
 Pages: -
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 Rev. Type: -
 Identifiers: DOI: 10.57757/IUGG23-4677
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Title: XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG)
Place of Event: Berlin
Start-/End Date: 2023-07-11 - 2023-07-20

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Title: XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG)
Source Genre: Proceedings
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Publ. Info: Potsdam : GFZ German Research Centre for Geosciences
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