Hadamard Transform Spectrometer

Abstract

A Hadamard Transform Spectrometer is described. This multiplexing spectrometer is based on a 127 square cyclic Hadamard matrix. A resolving power of 0.1/cm is achieved with a multiplexing gain factor of over five-fold in signal-to-noise ratio over use of a conventional single exit slit. A procedure for calibrating an infrared prism spectrometer plots drum numbers and wavelengths as ordinates against a trigonometric function of the index of the prism, as parameter and abscissae. The calibration data yields a straight line so only calibration data for two wavelengths is necessary.

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1972
Accession Number
AD0740585

Entities

People

  • John Strong

Organizations

  • University of Massachusetts Amherst

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Absorption
  • Air Force
  • Calibration
  • Department Of Defense
  • Detectors
  • Emission
  • Focal Planes
  • High Resolution
  • Measurement
  • Observatories
  • Optics
  • Physics
  • Physics Laboratories
  • Research Facilities
  • Simulators
  • Spectra
  • Spectrometers

Readers

  • Approximation Theory.
  • Optical Physics and Photonics.
  • Solar Physics