Earth's Gravity Field Recovered from CHAMP Science Orbit and Accelerometer Data

AMP satellite.The model that resolves the geoid with an accuracy of better than 4 cm at a resolution of 700 km half-wavelength.By using the degree errors of geopotential coefficients difference to compare the model CDS01S with EIGEN3P,EIGEN1S and EGM96,the result indicates that the CDS01S coefficients are most close to EIGEN3P.Comparing the accuracy of geopotential coefficients in these models,the result indicates the accuracy of coefficients in CDS01S is higher than EGM96.The geoid undulations of CDS01S and GGM01C up to 30 degrees are calculated,the result indicates the standard deviation is 4.7 cm between them.