Publications related to Astronomical interferometer

The two-dimensional array of 2048 tilting micromirrors for astronomical spectroscopy

Nico de Rooij, Michael David Canonica, Wilfried Noell

In multi-object spectrometers, field selectors, which are located in the focal plane of the telescopes, are required for the selection of astronomical objects, such as stars or faint galaxies. We present a two-dimensional micromirror array as a field selec ...

Institute of Physics2013

Sparsity averaging for radio-interferometric imaging

Yves Wiaux, Rafael Eduardo Carrillo Rangel, Jason Douglas McEwen

We propose a novel regularization method for compressive imaging in the context of the CS theory with coherent and redundant dictionaries. The approach relies on the conjecture that natural images exhibit strong average sparsity over multiple coherent fram ...

2013

Synthesis of uniform amplitude focused beam arrays

Juan Ramon Mosig, Anja Skrivervik, Benjamin Fuchs

An iterative algorithm to synthesize uniform amplitude focused beam arrays is presented. While the number of array elements and the excitations are fixed and known, the locations of the elements are optimized to radiate a narrow beam low sidelobe pattern. ...

IEEE2013

Sparsity Averaging Reweighted Analysis (SARA): a novel algorithm for radio-interferometric imaging

Yves Wiaux, Rafael Eduardo Carrillo Rangel, Jason Douglas McEwen

We propose a novel algorithm for image reconstruction in radio interferometry. The ill-posed inverse problem associated with the incomplete Fourier sampling identified by the visibility measurements is regularized by the assumption of average signal sparsi ...

Wiley-Blackwell2012

Interferometric measurement of local spin fluctuations in a quantum gas

Jean-Philippe Brantut

Ultracold gases provide a controlled environment that is ideal for studying many intriguing phenomena associated with quantum correlated systems. Current efforts are directed towards the identification of magnetic properties, as well as the creation and de ...

Nature Publishing Group2012

Universal and efficient compressed sensing by spread spectrum and application to realistic Fourier imaging techniques

Pierre Vandergheynst, Yves Wiaux, Rémi Gribonval, Gilles Puy

We advocate a compressed sensing strategy that consists of multiplying the signal of interest by a wide bandwidth modulation before projection onto randomly selected vectors of an orthonormal basis. Firstly, in a digital setting with random modulation, con ...

Institute of Electrical and Electronics Engineers2012

Compressed sensing for radio interferometric imaging: review and future

Yves Wiaux, Jason Douglas McEwen

Radio interferometry is a powerful technique for astronomical imaging. The theory of compressed sensing (CS) has been applied recently to the ill-posed inverse problem of recovering images from the measurements taken by radio interferometric telescopes. We ...

Ieee Service Center, 445 Hoes Lane, Po Box 1331, Piscataway, Nj 08855-1331 Usa2011

Compressed sensing for wide-field radio interferometric imaging

Yves Wiaux, Jason Douglas McEwen

For the next generation of radio interferometric telescopes it is of paramount importance to incorporate wide field-of-view (WFOV) considerations in interferometric imaging, otherwise the fidelity of reconstructed images will suffer greatly. We extend comp ...

Wiley-Blackwell2011

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Astronomical interferometer

The two-dimensional array of 2048 tilting micromirrors for astronomical spectroscopy

Sparsity averaging for radio-interferometric imaging

Synthesis of uniform amplitude focused beam arrays

Sparsity Averaging Reweighted Analysis (SARA): a novel algorithm for radio-interferometric imaging

Large Micromirror Array Based on a Scalable Technology for Astronomical Instrumentation

Interferometric measurement of local spin fluctuations in a quantum gas

Universal and efficient compressed sensing by spread spectrum and application to realistic Fourier imaging techniques

Raman-assisted DPP-BOTDA sensor employing Simplex coding with sub-meter scale spatial resolution over 93 km standard SMF

Compressed sensing for radio interferometric imaging: review and future

Compressed sensing for wide-field radio interferometric imaging

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Chat with Graph Search

Large Micromirror Array Based on a Scalable Technology for Astronomical Instrumentation

Raman-assisted DPP-BOTDA sensor employing Simplex coding with sub-meter scale spatial resolution over 93 km standard SMF

Synthesis of uniform amplitude focused beam arrays

The two-dimensional array of 2048 tilting micromirrors for astronomical spectroscopy

Compressed sensing for wide-field radio interferometric imaging

Sparsity averaging for radio-interferometric imaging

Compressed sensing for radio interferometric imaging: review and future

Sparsity Averaging Reweighted Analysis (SARA): a novel algorithm for radio-interferometric imaging

Interferometric measurement of local spin fluctuations in a quantum gas

Universal and efficient compressed sensing by spread spectrum and application to realistic Fourier imaging techniques