Faceted-HyperSARA

Faceted-HyperSARA is a MATLAB library for radio-interferometric wideband intensity imaging. The library offers a collection of utility functions and scripts from data extraction from an RI measurement set MS Table to the reconstruction of a wideband intensity image over the field of view and frequency range of interest. The library contains an implementation of algorithms from the “SARA” family (SARA [Carrillo2012, Onose2017], HyperSARA [Abdulaziz2019] and Faceted HyperSARA [Thouvenin2021]). The following features, crucial to achieve high precision imaging from large data volumes, are supported.

• data dimensionality reduction via a visibility gridding-based scheme [Kartik2017];

• correction of the \(w\)-term via \(w\)-projection [Dabbech2017];

• incorporation of available compact Fourier models of the direction dependent effects (DDEs) in the measurement operator [Dabbech2021].

• estimation of the effective noise level when reliable noise estimates are not available, due to imperfect calibration.

Faceted-HyperSARA relies on two auxiliary submodules:

1. RI-measurement-operator for the formation of the radio-interferometric measurement operator;

2. SARA-dictionary for the implementation of the sparsity priors.

Note

This project is still under active development.

Installation & references

• Setup
  • Installation
  • Getting started
  • Contributing
• Contributors
  • Active contributors
  • Past contributors
• References

API

• Default parameters
  • User-defined parameters
  • Inner algorithmic parameters
• Optional input datasets
  • Directory description
  • General remarks
  • Input datasets
• src package
  • Module src.fhs
  • Module src.heuristics
  • Module src.hs
  • Module src.sara
  • API src
• lib package
  • Module lib.generate_data
  • Module lib.operators
  • Module lib.utils
• imaging package
• pyxisMs2mat package
  • Module pyxisMs2mat.pyxis4DataExtraction
  • Requirements
  • General notes
  • Examples

Indices and tables

• Index

• MATLAB Module Index

• Search Page