Analysis of EDM instruments calibration at the Kyviškės calibration baseline

Abstract

Calibration laboratory of Institute of Geodesy, VGTU was established in year 2000. Laboratory is accredited for EDM instruments calibration by Lithuanian National Accreditation Bureau since 2001-09-20. Laboratory fulfils LST EN ISO/IEC 17025:2005 standards. Calibration of EDM instruments is performed at Kyviškės calibration baseline. The baseline consists of six observation pillars at intervals from 20 to 1320 meters. Seventh pillar was built for baseline extension and possibility of angular measurements. Accuracy of baseline is 0,2 ÷1,2 mm. Calibration laboratory performs EDM instruments verification and calibration at the Kyviškės Calibration Baseline. Statistic of EDM instruments calibration used in Lithuania are presented. Regularity of calibration in Lithuania - 2 years. Statistical analysis of calibration results is presented. Over 60 total stations instruments are calibrated every year. Stability of Kyviškės calibration baseline is analysed and confirmed. Every 5 years Kyviškės calibration baseline is calibrated by specialists of Finnish Geodetic Institute.