ssapy_toolkit.Coordinates.gcrf_to_itrf

ssapy_toolkit.Coordinates.gcrf_to_itrf(r_gcrf, t, v=None)

Convert GCRF coordinates to ITRF coordinates.

Parameters: - r_gcrf (np.ndarray): 3D position vector in GCRF coordinates (meters). - t (np.ndarray): Time array for conversion. - v (np.ndarray, optional): Velocity vector in GCRF coordinates (m/s). Optional.

Returns: - np.ndarray: Position in ITRF coordinates,

or (position, velocity) in ITRF coordinates if velocity is provided.

Author: Travis Yeager (yeager7@llnl.gov)