Meaning and dimensions of vectors and matrices used in Sect. 2.1.
|n pix||Total number of pixels in image plane|
|& number of cells in uv-grid|
|nant||Total number of antennas in the array|
|nb||Number of visibilities|
|b||Index for a single visibility.|
|Residual image vector, size npix|
|ϵ||Vector of ϵ, size npix|
|Contains gain products, size nb. see Eq. (12)|
|1||Vector containing 1 in every cell, size nb|
|Vector of coordinates in differential Fourier|
|plane, of length 3.|
|ld||Vector of sky coordinates, of length 3.|
|Visibility seen by a baseline pq at time and|
|frequency t, ν. Size 2 × 2.|
|Fourier kernel for direction d, antenna p and|
|one pair. Size 2 × 2.|
|Jp,tν||Jones matrix for antenna p for one pair.|
|Contains the gains information. Size 2 × 2|
|B||Sky brightness distribution matrix, of size 2 × 2.|
|N||Noise matrix, of size 2 × 2. Contains a single|
|realisation n of the thermal noise in each cell.|
|Fourier transform matrix, of size npix × npix.|
|Baseline selection matrix, which picks out 1|
|visibility out of the full set. Size npix × nb|
|npix × npix convolution kernel that defines|
|Convolution matrix mapping one δuδv to δlδm.|
|The set of all determines the noise-PSF.|
|Size npix × npix.|
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