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| Titel: |
Mirror Velocity Sampling Errors in a Michelson Interferometer |
| Auteur: |
Combs, Roger J. Knapp, Robert B. Field, Paul E. |
| Verschenen in: |
Instrumentation science & technology |
| Paginering: | Jaargang 21 (1993) nr. 3-4 pagina's 163-194 |
| Jaar: |
1993 |
| Inhoud: |
Mirror velocity variations in a continuous mirror drive Michelson interferometer result in erroneous interferogram sampling. The effects of both systematic and random mirror fluctuations are evaluated. Four methods of evaluation provide a means to quantify the importance of mirror velocity errors in the Fourier spectrometer's performance as a spectroradiometer. The four methods are time interval signal analysis, sine wave test, optical chopper modulation, and examination of consecutive interferograms. Examination of consecutive interferograms includes the monitoring of a constant blackbody infrared radiation source as well as an interposed ammonia sample cell for wavenumber axis registration. Each method furnishes a known input to the interferometer modulation equation (i.e. 2uv=f) and permits an internal validation of the interferometer mirror velocity evaluation results. |
| Uitgever: |
Taylor & Francis |
| Bronbestand: |
Elektronische Wetenschappelijke Tijdschriften |
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