Performance comparison of aperture codes for multimodal, multiplex spectroscopy.

Published

Journal Article

We experimentally evaluate diverse static independent column codes in a coded aperture spectrometer. The performance of each code is evaluated based on the signal-to-noise ratio (SNR), defined as the peak value in the spectrum to the standard deviation of the background noise, as a function of subpixel vertical misalignments. Among the code families tested, an S-matrix-based code produces spectral reconstructions with the highest SNR. The SNR is least sensitive to vertical subpixel misalignments on the detector with a Hadamard-matrix-based code. Finally, the increased sensitivity of a spectrometer using a coded aperture instead of a slit is demonstrated.

Full Text

Duke Authors

Cited Authors

  • Wagadarikar, AA; Gehm, ME; Brady, DJ

Published Date

  • August 2007

Published In

Volume / Issue

  • 46 / 22

Start / End Page

  • 4932 - 4942

PubMed ID

  • 17676097

Pubmed Central ID

  • 17676097

Electronic International Standard Serial Number (EISSN)

  • 1539-4522

International Standard Serial Number (ISSN)

  • 1559-128X

Digital Object Identifier (DOI)

  • 10.1364/ao.46.004932

Language

  • eng