Preliminary communication

Calibration of HGI-1 and HGI-2 Scintrex CG-3M relative gravimeters

Željko Hećimović ; Hrvatski geodetski institut, Zagreb, Hrvatska
Danko Markovinović ; Faculty of Geodesy, University of Zagreb, Zagreb, Croatia

Abstract

To define scale of two Scintrex CG-3M relative gravimeters HGI-1 and HGI-2 of Croatian Geodetic Institute, considering the scale of the Croatian gravimetric calibration line, calibration is done. Calibration is done using measurements on two points of calibration line that are also points of the Croatian absolute gravimetric network: Zagreb – Maksimir and Zagreb – Puntijarka. Measurements are repeated for more days. Measurement reductions are made in real time and in post processing. After gravimeter drift is removed, calibrations constants are determined using last square adjustment. Quality of calibration constants and measurements is judged. Scale factor for each gravimeter is determined using calibration constants. In that way are gravimetric measurements by HGI-1 and HGI-2 made consistent with Croatian gravimetric calibration line in real time.

Keywords

gravimeter calibration; calibration function; calibration constant; scale factor

Hrčak ID:

290279

URI

https://hrcak.srce.hr/290279

Publication date:

30.9.2003.

Article data in other languages: croatian

Visits: 289 *