Calculate tidal potential for a single time and multiple waves. Code adapted from ETERNA.
et_analyze(astro, astro_der, k_mat, pk, body, body_inds, delta, deltar, x0,
y0, x1, y1, x2, y2, j2000, o1, resonance, max_amp, update_coef)vector astronomical parameters
vector derivative of astronomical parameters
matrix tidal catalog values
vector of phases for each group
vector of body tide for each group
indices of body max for each group
vector body
double gravimentric factor
vector tidal catalog values
vector tidal catalog values
vector tidal catalog values
vector tidal catalog values
vector tidal catalog values
vector tidal catalog values
double Julian date
double frequency
double frequency
int index of the wave with maximum amplitude in wave group
double constant for phase updating
synthetic gravity
Wenzel, H.-G. (1996): The nanogal software: Earth tide data processing package ETERNA 3.3. Bulletin d'Informations Marees Terrestres vol. 124, 9425-9439, Bruxelles 1996.