Abstract:Based on the observation data from the national gravity fundamental network, we use regularization methods to calculate the periodic terms parameters of LCR-G gravity meters, and analyze the adjustment results of the calculation. The results show that the regularization method can effectively screen the relative gravity periodic terms when the penalty factor is 80, and the changes in regularized parameter values have little effect on the periodic screening result; the amplitude of the periodic terms can reach more than 10×10-8 m/s2, which has a greater impact that reaches 10-8 m/s2 on the gravity value; the periodic of gravity meters will change with the observation environment or time, resulting in inconsistent solution results. As the periodic function model differs from the actual periodic changes, the model can only be approximate and cannot really simulate periodic changes.