Gaseous Correlation Spectrometric Measurements

Certain basic criteria must be considered when designing remote sensors. The gaseous species of interest may have characteristic spectra in various bands, so that some flexibility may exist for instrument selection and measurement concept. Major design parameters are: (a) Instrument sensitivity, i.e. adequate signal-to-noise ratio. (b) Instrument specificity, i.e. the ability to discriminate against interferents within the spectral bandpass. (c) Instrument measurement time to receive and process the signal, e.g. finite spectral scan time or interferometer delay. (d) Complementary data requirements e.g. temperature. (e) Data inversion requirements. (f) Size, weight, power and environmental constraints.