The correlation between the visibility samples' noise of an aperture synthesis radiometer are required for the computation of the recovered temperature noise of a given pixel and of the improvement introduced by baseline redundance. A general expression for this correlation and noise examples for a linear array are presented.
Bara, F., Camps, A., Torres, F., Corbella, I. The correlation of visibility noise and its impact on the radiometric resolution of an aperture synthesis radiometer. "IEEE transactions on geoscience and remote sensing", Setembre 2000, vol. 38, núm. 5, p. 2423-2426.