Abstract The accuracy estimation of the determination of the calibration factor of a superconducting gravimeter using an absolute gravimeter is discussed in detail. Possible factors affecting the accuracy are analyzed. The result indicates that it can minimize the accuracy to choose the observation period as the large tide period. The linear instrumental drift must be deducted before calculation, and the time shift must be checked and corrected. As an example, the calibration experiment at Wuhan station using an absolute FG5112 gravimeter to calibrate the GWRC032 superconducting gravimeter shows that it is comparatively difficult to achieve a relative calibration accuracy of 0.1%, which need very long time absolute gravity data. However, a relative calibration accuracy of 0.2% can meet the requirements to calibrate most of the superconducting gravimeters, and this accuracy can be reached using about 5 days absolute gravity data.
Chen Xiaodong,Sun Heping,Zhang Weimin et al. ACCURACY ANALYSIS ON DETERMINATION OF CALIBRATION
FACTOR OF A SUPERCONDUCTING GRAVIMETER USING AN
ABSOLUTE GRAVIMETER[J]. jgg, 2013, 33(5): 145-149.
Chen Xiaodong,Sun Heping,Zhang Weimin et al. ACCURACY ANALYSIS ON DETERMINATION OF CALIBRATION
FACTOR OF A SUPERCONDUCTING GRAVIMETER USING AN
ABSOLUTE GRAVIMETER[J]. jgg, 2013, 33(5): 145-149.
