Abstract It is of great significance to construct a quasi-geoid model for lake region to determine the water resources quantity. severe relief and shortage of gravity Quasi-geoidaround the lake is common situation, the accuracy difference of Quasi-geoidmodeling with Polynomial and Radial Basis Function is compared and analyzed by using GNSS/ leveling data, and the effect on the modeling accuracy as for the number of GNSS/ leveling data points is also analyzed. The results show that the Quasi-geoid model based on Radial Basis Function method has high precision and wide application range, and can meet the requirements of lake underwater terrain mapping.
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Baogui et al. (2024) studied this question.
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