Performance comparison of aperture codes for multimodal, multiplex spectroscopy.
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