bilby.gw.utils.get_vertex_position_geocentric

bilby.gw.utils.get_vertex_position_geocentric(latitude, longitude, elevation)[source]

Calculate the position of the IFO vertex in geocentric coordinates in meters.

Based on arXiv:gr-qc/0008066 Eqs. B11-B13 except for the typo in the definition of the local radius. See Section 2.1 of LIGO-T980044-10 for the correct expression

Parameters:
latitude: float

Latitude in radians

longitude:

Longitude in radians

elevation:

Elevation in meters

Returns:
array_like: A 3D representation of the geocentric vertex position