DoodsonHarmonics2PotentialCoefficients
The inputfileDoodsonHarmonics contains a Fourier series of a time variable gravitational potential at specific tidal frequencies (tides) \[ V(\M x,t) = \sum_{f} V_f^c(\M x)\cos(\theta_f(t)) + V_f^s(\M x)\sin(\theta_f(t)), \]where $V_f^c(\M x)$ and $V_f^s(\M x)$ are spherical harmonics expansions. If set the expansions are limited in the range between minDegree and maxDegree inclusivly. The coefficients are related to the reference radius R and the Earth gravitational constant GM.
The outputfilePotentialCoefficients is not a single file but a series of files.
For each spherical harmonics expansion $V_f^c(\M x)$ and $V_f^s(\M x)$ a separate file is created
where the variables variableLoopName, variableLoopDoodson, variableLoopCosSin are set accordingly.
The file name should contain these variables, e.g. coeff.{name}.{doodson}.{cossin}.gfc.
If applyXi the Doodson-Warburg phase correction (see IERS conventions) is applied to the cos/sin potentialCoefficients before.
| Name | Type | Annotation |
|---|---|---|
outputfilePotentialCoefficients | filename | |
variableLoopName | string | variable with darwins's name of each constituent |
variableLoopDoodson | string | variable with doodson code of each constituent |
variableLoopCosSin | string | variable with 'cos' or 'sin' of each constituent |
variableLoopIndex | string | variable with index of each constituent (starts with zero) |
variableLoopCount | string | variable with total number of constituents |
inputfileDoodsonHarmonics | filename | |
inputfileTideGeneratingPotential | filename | to compute Xi phase correction |
minDegree | uint | |
maxDegree | uint | |
GM | double | Geocentric gravitational constant |
R | double | reference radius |
applyXi | boolean | apply Doodson-Warburg phase correction (see IERS conventions) |