EoRImaging / FHD

Fast Holographic Deconvolution
BSD 2-Clause "Simplified" License
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Gaussian beam decomp #269

Closed nicholebarry closed 3 years ago

nicholebarry commented 3 years ago

The basic functionality for the gaussian beam decomposition of the MWA. This is a pared down version of what I've been running for about a year now.

I will run some basic testing to make sure that all of the hooks are in place, but this should be sufficient to start a review.

The code does the following: Using initial conditions, it can fit the MWA image beam in directional cosine space with a series of gaussians using a FORTRAN-inspired fitting procedure ( or transferring the gaussian parameters ). The Fourier transform to uv-space is then analytic, and can be calculated at the desired overresolution (instead of using interpolation to create the lookup table).

A variety of float vs double issues were found in this process, in addition to easy memory reduction during the beam making process.