Here we provide ocean and atmospheric tide models for easy consideration in precise satellite orbit determination. The gravitational effect of tides including loading effects at a given time can be represented as corrections to the Stokes coefficients of a spherical harmonics expansion. This requires not only an atlas of selected major tidal consitutents but also a calculation rule to complement all frequency lines. This can be done by interpolation using an admittance matrix. For this purpose, a file format and an algorithm are defined here. All required information can be found in the README. We provide also reference implementations in MATLAB, Python and Fortran.
The following models are currently available
Please cite the models accordingly and respect their license.