solve_antenna_gains_itsubs_scalar

solve_antenna_gains_itsubs_scalar(gain, gwt, x, xwt, niter=30, tol=1e-08, phase_only=True, refant=0, damping=0.5)[source]

Solve for the antenna gains

x(antenna2, antenna1) = gain(antenna1) conj(gain(antenna2))

This uses an iterative substitution algorithm due to Larry D’Addario c 1980’ish (see ThompsonDaddario1982 Appendix 1). Used in the original VLA Dec-10 Antsol.

Parameters

  • gain – gains

  • gwt – gain weight

  • x – Equivalent point source visibility[nants, nants, …]

  • xwt – Equivalent point source weight [nants, nants, …]

  • niter – Number of iterations

  • tol – tolerance on solution change

  • phase_only – Do solution for only the phase? (default True)

  • refant – Reference antenna for phase (default=0)

Returns

gain [nants, …], weight [nants, …]