Spread spectrum for imaging techniques in radio interferometry

Details Spread spectrum for imaging techniques in radio interferometry Spread spectrum for imaging techniques in radio interferometry

2009-07-06

arxiv.org/abs/0907.0944v2

Mon. Not. R. Astron. Soc. 400 (2009) 1029

Astronomy and Astrophysics

Astrophysics

Instrumentation and Methods for Astrophysics

10 pages, 3 figures. Version 2 matches version accepted for publication in MNRAS. Changes include minor clarifications

Scientific paper

10.1111/j.1365-2966.2009.15519.x

We consider the probe of astrophysical signals through radio interferometers with small field of view and baselines with non-negligible and constant component in the pointing direction. In this context, the visibilities measured essentially identify with a noisy and incomplete Fourier coverage of the product of the planar signals with a linear chirp modulation. In light of the recent theory of compressed sensing and in the perspective of defining the best possible imaging techniques for sparse signals, we analyze the related spread spectrum phenomenon and suggest its universality relative to the sparsity dictionary. Our results rely both on theoretical considerations related to the mutual coherence between the sparsity and sensing dictionaries, as well as on numerical simulations.

Affiliated with

Also associated with

No associations

Rating

Spread spectrum for imaging techniques in radio interferometry does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Spread spectrum for imaging techniques in radio interferometry, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Spread spectrum for imaging techniques in radio interferometry will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-27378