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With the development of GNSS, one can easily obtain gravity disturbances at almost every point on the Earth’s surface. Thus, the use of gravity disturbance in geoid modeling becomes more appropriate than the use of gravity anomalies that require leveling in the points. For this reason, here is presented the basic theory for the application of radial basis functions for geoid heights modeling and in particular a Hotine-Koch scaling function for calculation with gravity disturbance. The report aims to test the appro...