Abstract：Three absolute gravimetric points in southern Tianshan gravity network are used as adjustment data, and repeated gravity data sets of 2015-2016 are used to calibrate two CG-5 gravimeters. Then, the adjustment results before and after calibration are compared. The results show that the scale factor coefficient after calibration is significantly different than the initial value. The adjustment precision obtained by the calibration value is obviously higher than that using the initial value. Additional systematic errors are introduced by using the scale factor with error. Differentiated gravity change results show that gravity change obtained by the calibration value reduced significantly. The analysis shows that using observation data from the gravity network to calibrate the scale factor of gravimeters can reduce the influence of scale factor with error on the adjustment result effectively. It is therefore useful to eliminate the false information on gravity change.
WEI Shouchun,ZHU Yiqing,ZHAO Yunfeng et al. Impact on Gravity Data Process of Scale Factor Coefficient of CG-5 Gravimeter[J]. jgg, 2019, 39(2): 210-214.
