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Multitaper scan-free spectrum estimation using a rotational shear interferometer.

Publication ,  Journal Article
Lepage, K; Thomson, DJ; Kraut, S; Brady, DJ
Published in: Applied optics
May 2006

Multitaper methods for a scan-free spectrum estimation that uses a rotational shear interferometer are investigated. Before source spectra can be estimated the sources must be detected. A source detection algorithm based upon the multitaper F-test is proposed. The algorithm is simulated, with additive, white Gaussian detector noise. A source with a signal-to-noise ratio (SNR) of 0.71 is detected 2.9 degrees from a source with a SNR of 70.1, with a significance level of 10(-4), approximately 4 orders of magnitude more significant than the source detection obtained with a standard detection algorithm. Interpolation and the use of prewhitening filters are investigated in the context of rotational shear interferometer (RSI) source spectra estimation. Finally, a multitaper spectrum estimator is proposed, simulated, and compared with untapered estimates. The multitaper estimate is found via simulation to distinguish a spectral feature with a SNR of 1.6 near a large spectral feature. The SNR of 1.6 spectral feature is not distinguished by the untapered spectrum estimate. The findings are consistent with the strong capability of the multitaper estimate to reduce out-of-band spectral leakage.

Duke Scholars

Published In

Applied optics

DOI

EISSN

1539-4522

ISSN

1559-128X

Publication Date

May 2006

Volume

45

Issue

13

Start / End Page

2940 / 2954

Related Subject Headings

  • Optics
  • 5102 Atomic, molecular and optical physics
  • 4008 Electrical engineering
  • 0913 Mechanical Engineering
  • 0906 Electrical and Electronic Engineering
  • 0205 Optical Physics
 

Citation

APA
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ICMJE
MLA
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Lepage, K., Thomson, D. J., Kraut, S., & Brady, D. J. (2006). Multitaper scan-free spectrum estimation using a rotational shear interferometer. Applied Optics, 45(13), 2940–2954. https://doi.org/10.1364/ao.45.002940
Lepage, Kyle, David J. Thomson, Shawn Kraut, and David J. Brady. “Multitaper scan-free spectrum estimation using a rotational shear interferometer.Applied Optics 45, no. 13 (May 2006): 2940–54. https://doi.org/10.1364/ao.45.002940.
Lepage K, Thomson DJ, Kraut S, Brady DJ. Multitaper scan-free spectrum estimation using a rotational shear interferometer. Applied optics. 2006 May;45(13):2940–54.
Lepage, Kyle, et al. “Multitaper scan-free spectrum estimation using a rotational shear interferometer.Applied Optics, vol. 45, no. 13, May 2006, pp. 2940–54. Epmc, doi:10.1364/ao.45.002940.
Lepage K, Thomson DJ, Kraut S, Brady DJ. Multitaper scan-free spectrum estimation using a rotational shear interferometer. Applied optics. 2006 May;45(13):2940–2954.

Published In

Applied optics

DOI

EISSN

1539-4522

ISSN

1559-128X

Publication Date

May 2006

Volume

45

Issue

13

Start / End Page

2940 / 2954

Related Subject Headings

  • Optics
  • 5102 Atomic, molecular and optical physics
  • 4008 Electrical engineering
  • 0913 Mechanical Engineering
  • 0906 Electrical and Electronic Engineering
  • 0205 Optical Physics