pad_mid

pad_mid(ff, npixel)

Pad a far field image with zeroes to make it the given size.

Effectively as if we were multiplying with a box function of the original field’s size, which is equivalent to a convolution with a sinc pattern in the uv-grid.

Note

Only the two innermost axes are transformed

This function does not handle odd-sized dimensions properly

Parameters

• ff – The input far field. Should be smaller than npixelxnpixel.

• npixel – The desired far field size