An introduction to Hadamard spectrometry and the multiplex advantage

Author

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

Author_Institution

Dept. of Electr. & Comput. Eng., Kansas State Univ., Manhattan, KS, USA

fYear

1989

fDate

25-27 Apr 1989

Firstpage

434

Lastpage

438

Abstract

The authors consider a special class of problems in which the dominant noise source in the spectrum measurements is the noise generated in the detector itself. In this case, the signal-to-noise ratio of the spectrum estimates can be improved by a multiplexing technique known as Hadamard spectrometry. Specifically, if the MSE (mean-square error) of a single-slit spectrometer is σ², the MSE of a Hadamard system will be approximately 4/σ²/N. In this expression, N is the number of spectral components to be estimated and the number of measurements to be taken

Keywords

measurement errors; multiplexing; random noise; signal processing; spectral analysis; spectroscopy; Hadamard spectrometry; mean-square error; multiplex; noise source; signal-to-noise ratio; single-slit spectrometer; spectral components; spectrum measurements; Electromagnetic radiation; Frequency estimation; Infrared detectors; Noise generators; Noise measurement; Optical scattering; Optical sensors; Spectroscopy; Stimulated emission; Wavelength measurement;

fLanguage

English

Publisher

ieee

Conference_Titel

Instrumentation and Measurement Technology Conference, 1989. IMTC-89. Conference Record., 6th IEEE

Conference_Location

Washington, DC

Type

conf

DOI

10.1109/IMTC.1989.36899

Filename

36899