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Sampling comb generation and precision in FIR interferometric spectrometers
Affiliation:1. Global Centre for Environmental Remediation, Faculty of Science, The University of Newcastle, University Drive, Callaghan NSW, 2308, Australia;2. Centre for Environmental Risk Assessment and Remediation (CERAR), University of South Australia, Adelaide, SA, Australia;3. Cooperative Research Centre for Contamination Assessment and Remediation of the Environments, Advanced Technology Centre, The University of Newcastle, University Drive, Callaghan NSW, 2308, Australia;1. University of Montpellier, 30907 Nîmes, France;2. LSEE Laboratory, University of Artois, 62400 Béthune, France;3. Research Department on Electric Motor of the SEB Group, France;4. SATIE Laboratory, CNRS, École Normale Supérieure de Rennes, Campus of KerLann, 35170 Bruz, France;5. University of Grenoble Alpes, CNRS, Grenoble INP (Institute of Engineering), G2ELab, 38000 Grenoble, France;6. Research & Development Department on Smartgrid of the CEA, 73375 Le Bourget-du-Lac, France
Abstract:Maximum acceptable random errors in the sampling comb of FIR interferometers are discussed in relation to required resolving power. Direct measurements of sampling interval variability are presented for two stepper motors and two continuous motor drives. All four systems give variations greater than that permitted by a relation due to Sakai for high resolution measurements at wavenumbers above 40 cm−1.
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