2016/06/27 by L. Zhang, Li Zhang, S. Bhatnagar +3
Engineering · Physics and Astronomy · #Algorithm #Antenna Design and Optimization #Artificial intelligence #Astrophysics and Cosmic Phenomena #Brightness #Computer science #Context (archaeology) #Deconvolution #Function (biology) #Optics #Physics #Pixel #Point spread function #Radio Astronomy Observations and Technology #Scale (ratio) #astro-ph.IM
paper · pdf · doi:10.1051/0004-6361/201628596
published as A&A 592, A128 (2016) · 6 pages; 4 figures
openalex publication_date 2016/06/27 · arxiv created 2017/12/15 · arxiv updated 2017/12/18 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
Context. Most popular algorithms in use to remove the effects of a telescope’s point spread function (PSF) in radio astronomy are variants of the CLEAN algorithm. Most of these algorithms model the sky brightness using the delta-function basis, which results in undesired artefacts when used to image extended emission. The adaptive scale pixel decomposition (Asp-Clean) algorithm models the sky brightness on a scale-sensitive basis and thus gives a significantly better imaging performance when imaging fields that contain both resolved and unresolved emission.