Implementation problems in Hadamard spectrometry

R. A. Dyer, S. A. Dyer, B. K. Harms, T. W. Johnson, J. B. Park

Research output: Contribution to conferencePaper

1 Citation (Scopus)

Abstract

The multiplexing offered by Hadamard-transform spectrometry can improve the signal-to-noise ratio at the output of a spectrometer. Traditionally, the inverse Hadamard transform (IHT) has been used to recover the individual spectral components, but the IHT does not take into account the nonidealities associated with the multiplexing process. A system model has been developed which addresses nonidealities in the multiplexer, noise introduced at the detector, and choice of method for spectrum recovery. A computer simulation of the model has been developed and can be used to examine the effect of certain nonidealities that may typically be encountered. Three different spectrum-recovery schemes are examined, and their relative performance is compared with regard to mean-square error and to the computational efficiency of the algorithms necessary to implement them. An example application is described, and the performance of the three spectrum-recovery schemes is discussed.

Original languageEnglish
Pages439-445
Number of pages7
Publication statusPublished - 1989 Dec 1
EventIEEE Instrumentation and Measurement Technology Conference - Washington, DC, USA
Duration: 1989 Apr 251989 Apr 27

Other

OtherIEEE Instrumentation and Measurement Technology Conference
CityWashington, DC, USA
Period89/4/2589/4/27

Fingerprint

Hadamard transforms
Spectrometry
Inverse transforms
Multiplexing
Recovery
Computational efficiency
Mean square error
Spectrometers
Signal to noise ratio
Detectors
Computer simulation

All Science Journal Classification (ASJC) codes

  • Engineering(all)

Cite this

Dyer, R. A., Dyer, S. A., Harms, B. K., Johnson, T. W., & Park, J. B. (1989). Implementation problems in Hadamard spectrometry. 439-445. Paper presented at IEEE Instrumentation and Measurement Technology Conference, Washington, DC, USA, .
Dyer, R. A. ; Dyer, S. A. ; Harms, B. K. ; Johnson, T. W. ; Park, J. B. / Implementation problems in Hadamard spectrometry. Paper presented at IEEE Instrumentation and Measurement Technology Conference, Washington, DC, USA, .7 p.
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Dyer, RA, Dyer, SA, Harms, BK, Johnson, TW & Park, JB 1989, 'Implementation problems in Hadamard spectrometry' Paper presented at IEEE Instrumentation and Measurement Technology Conference, Washington, DC, USA, 89/4/25 - 89/4/27, pp. 439-445.

Implementation problems in Hadamard spectrometry. / Dyer, R. A.; Dyer, S. A.; Harms, B. K.; Johnson, T. W.; Park, J. B.

1989. 439-445 Paper presented at IEEE Instrumentation and Measurement Technology Conference, Washington, DC, USA, .

Research output: Contribution to conferencePaper

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AB - The multiplexing offered by Hadamard-transform spectrometry can improve the signal-to-noise ratio at the output of a spectrometer. Traditionally, the inverse Hadamard transform (IHT) has been used to recover the individual spectral components, but the IHT does not take into account the nonidealities associated with the multiplexing process. A system model has been developed which addresses nonidealities in the multiplexer, noise introduced at the detector, and choice of method for spectrum recovery. A computer simulation of the model has been developed and can be used to examine the effect of certain nonidealities that may typically be encountered. Three different spectrum-recovery schemes are examined, and their relative performance is compared with regard to mean-square error and to the computational efficiency of the algorithms necessary to implement them. An example application is described, and the performance of the three spectrum-recovery schemes is discussed.

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Dyer RA, Dyer SA, Harms BK, Johnson TW, Park JB. Implementation problems in Hadamard spectrometry. 1989. Paper presented at IEEE Instrumentation and Measurement Technology Conference, Washington, DC, USA, .