Table 1 Modulation and demodulation scheme across 8 detection channels, followed by data analysis to provide spectral and water vapour referencing.

From: Mid-IR standoff measurement of ageing-related spectroscopic changes in bitumen in the 6 µm (1700 cm−1) region. Part 2: Instrument development and results

  1. A more in-depth description of the referencing is presented in part 1 of this series 23.
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