000183884 001__ 183884
000183884 005__ 20190617200658.0
000183884 037__ $$aCONF
000183884 245__ $$aThe varying w spread spectrum effect for radio interferometric imaging
000183884 269__ $$a2013
000183884 260__ $$c2013
000183884 336__ $$aConference Papers
000183884 520__ $$aWe study the impact of the spread spectrum effect in radio interferometry on the quality of image reconstruction. This spread spectrum effect will be induced by the wide field-of-view of forthcoming radio interferometric telescopes. The resulting chirp modulation improves the quality of reconstructed interferometric images by increasing the incoherence of the measurement and sparsity dictionaries. We extend previous studies of this effect to consider the more realistic setting where the chirp modulation varies for each visibility measurement made by the telescope. In these first preliminary results, we show that for this setting the quality of reconstruction improves significantly over the case without chirp modulation and achieves almost the reconstruction quality of the case of maximal, constant chirp modulation.
000183884 6531_ $$aRadio interferometry
000183884 6531_ $$aCompressed sensing
000183884 6531_ $$aSpread spectrum
000183884 6531_ $$aCIBM-SPC
000183884 6531_ $$aLTS2
000183884 6531_ $$aLTS5
000183884 700__ $$aWolz, Laura
000183884 700__ $$aAbdalla, Filipe
000183884 700__ $$0245580$$g215293$$aCarrillo, Rafael
000183884 700__ $$0240427$$g163268$$aWiaux, Yves
000183884 700__ $$aMcEwen, Jason$$g201873$$0242931
000183884 7112_ $$dJanuary, 2013$$cVillars-sur-Ollon, Switzerland$$aInternational Biomedical and Astronomical Signal Processing (BASP) Frontiers workshop
000183884 8564_ $$uhttp://baspfrontiers.epfl.ch/proceedings.php$$zURL
000183884 8564_ $$uhttps://infoscience.epfl.ch/record/183884/files/wolzBASP2013.pdf$$zn/a$$s116478$$yn/a
000183884 909C0 $$xU10380$$0252392$$pLTS2
000183884 909C0 $$pLTS5$$xU10954$$0252394
000183884 909CO $$qGLOBAL_SET$$pconf$$pSTI$$ooai:infoscience.tind.io:183884
000183884 917Z8 $$x215293
000183884 917Z8 $$x215293
000183884 917Z8 $$x215293
000183884 917Z8 $$x215293
000183884 917Z8 $$x215293
000183884 917Z8 $$x215293
000183884 937__ $$aEPFL-CONF-183884
000183884 973__ $$rREVIEWED$$sPUBLISHED$$aEPFL
000183884 980__ $$aCONF