build_normal_equation

ska_sdp_func_python.calibration.ionosphere_solvers.build_normal_equation(vis: Visibility, modelvis: Visibility, param, coeff, cluster_id, cid=None)

Build normal equations.

Parameters:

• vis – Visibility containing the observed data_models

• modelvis – Visibility containing the predicted data_models

• param – [n_cluster] list of solution vectors, one for each cluster

• coeff – [n_station] list of basis-func value vectors, one per station Stored as a numpy dtype=object array of variable-length coeff vectors

• cluster_id – [n_antenna] array of antenna cluster indices

• cid – index of current cluster. Defaults to None, which will build a single large matrix for all clusters.