A measure of the sensitivy of an antenna or array to the spatial frequencies on the sky,
where
x and
y are measured in wavelengths, is the electric field across the aperture, and denotes the
complex conjugate Eric Weisstein's World of Math of
z. This applies only to an interferometer in which the voltages are
summed linearly, and so does not apply to the
correlation interferometer.
© 1996-2007 Eric W. Weisstein
