hera_sim.vis.sim_red_data

hera_sim.vis.sim_red_data(reds, gains=None, shape=(10, 10), gain_scatter=0.1)[source]

Simulate thermal-noise-free random but redundant (up to gains) visibilities.

Parameters:

  • reds (list of list of tuples) – list of lists of baseline-pol tuples where each sublist has only redundant pairs

  • gains (dict) – pre-specify base gains to then scatter on top of in the {(index,antpol): ndarray} format. Default gives all ones.

  • shape (tuple) – (Ntimes, Nfreqs).

  • gain_scatter (float) – relative amplitude of per-antenna complex gain scatter

Returns:

  • dict – true gains used in the simulation in the {(index,antpol): np.array} format

  • dict – true underlying visibilities in the {(ind1,ind2,pol): np.array} format

  • dict – simulated visibilities in the {(ind1,ind2,pol): np.array} format