jgg     2013 33 (5):  145-149    ISSN: 0412-1961  CN: 21-1139/TG ACCURACY ANALYSIS ON DETERMINATION OF CALIBRATION  FACTOR OF A SUPERCONDUCTING GRAVIMETER USING AN  ABSOLUTE GRAVIMETER State Key Laboratory of Geodesy and Earth’s Dynamics, Institute of Geodesy  and Geophysics, CAS, Wuhan 430077 Received: 2013-02-18  Revised: null  Online: 2013-10-13 Supporting info