jgg     2013 33 (5):  49-52    ISSN: 0412-1961  CN: 21-1139/TG COMPARISON ON INTERPOLATION METHOD FOR HIGH SAMPLING  RATE OF GPS SATELLITE ORBIT Earthquake Administration of Fujian Province, Fuzhou 350003 Received: 2013-02-09  Revised: null  Online: 2013-10-13 Supporting info