simulate_point

ska_sdp_func_python.util.coordinate_support.simulate_point(dist_uvw, l, m)[source]

Simulate visibilities for unit amplitude point source at direction cosines (l,m) relative to the phase centre.

This includes phase tracking to the centre of the field (hence the minus 1 in the exponent).

Note that point source is delta function, therefore the FT relationship becomes an exponential, evaluated at (uvw.lmn).

Parameters:

  • dist_uvw – (u,v,w) distribution of projected baselines (in wavelengths)

  • l – Horizontal direction cosine relative to phase tracking centre

  • m – Orthogonal directon cosine relative to phase tracking centre

Returns:

Complex array of Visibility data