Super-resolution imaging with radio interferometry using sparse modeling

M Honma, K Akiyama, M Uemura… - Publications of the …, 2014 - academic.oup.com
We propose a new technique to obtain super-resolution images with radio interferometry
using sparse modeling. In standard radio interferometry, sampling of (u, v) is quite often …

Bearing fault diagnosis using piecewise aggregate approximation and complete ensemble empirical mode decomposition with adaptive noise

L Hu, L Wang, Y Chen, N Hu, Y Jiang - Sensors, 2022 - mdpi.com
Complete ensemble empirical mode decomposition with adaptive noise (CEEMDAN)
effectively separates the fault vibration signals of rolling bearings and improves the …

Towards generalized FRI sampling with an application to source resolution in radioastronomy

H Pan, T Blu, M Vetterli - IEEE Transactions on Signal …, 2016 - ieeexplore.ieee.org
It is a classic problem to estimate continuous-time sparse signals, like point sources in a
direction-of-arrival problem, or pulses in a time-of-flight measurement. The earliest …

PURIFY: a new approach to radio-interferometric imaging

RE Carrillo, JD McEwen, Y Wiaux - Monthly Notices of the Royal …, 2014 - academic.oup.com
In a recent paper series, the authors have promoted convex optimization algorithms for radio-
interferometric imaging in the framework of compressed sensing, which leverages sparsity …

Scalable splitting algorithms for big-data interferometric imaging in the SKA era

A Onose, RE Carrillo, A Repetti… - Monthly Notices of …, 2016 - academic.oup.com
In the context of next-generation radio telescopes, like the Square Kilometre Array (SKA), the
efficient processing of large-scale data sets is extremely important. Convex optimization …

LOFAR sparse image reconstruction

H Garsden, JN Girard, JL Starck, S Corbel… - Astronomy & …, 2015 - aanda.org
Context. The LOw Frequency ARray (LOFAR) radio telescope is a giant digital phased array
interferometer with multiple antennas distributed in Europe. It provides discrete sets of …

Superresolution interferometric imaging with sparse modeling using total squared variation: application to imaging the black hole shadow

K Kuramochi, K Akiyama, S Ikeda… - The Astrophysical …, 2018 - iopscience.iop.org
We propose a new imaging technique for interferometry using sparse modeling, utilizing two
regularization terms: the ℓ 1-norm and a new function named total squared variation (TSV) of …

A sparse Kaczmarz solver and a linearized Bregman method for online compressed sensing

DA Lorenz, S Wenger, F Schöpfer… - 2014 IEEE international …, 2014 - ieeexplore.ieee.org
An algorithmic framework to compute sparse or minimal-TV solutions of linear systems is
proposed. The framework includes both the Kaczmarz method and the linearized Bregman …

Uncertainty quantification for radio interferometric imaging: II. MAP estimation

X Cai, M Pereyra, JD McEwen - Monthly Notices of the Royal …, 2018 - academic.oup.com
Uncertainty quantification is a critical missing component in radio interferometric imaging
that will only become increasingly important as the big-data era of radio interferometry …

Cygnus A super-resolved via convex optimization from VLA data

A Dabbech, A Onose, A Abdulaziz… - Monthly Notices of …, 2018 - academic.oup.com
Abstract We leverage the Sparsity Averaging Re-weighted Analysis approach for
interferometric imaging, that is based on convex optimization, for the super-resolution of Cyg …