Table 1
Relative sensitivity of optical distance measurements to the variation of environmental parameters: temperature ΔT, pressure Δp, partial pressure of water vapour Δpw and carbon dioxide content Δxc around T = 293 K, p = 1013.25 hPa, RH = 50% and xc = 450 ppm for an optical wavelength of 1550 nm. Values calculated using the equation of Bönsch and Potulski[2].
| Parameter | Contribution |
|---|---|
| ΔT | ¯0.95 (μm/m)/K |
| Δp | +0.27 (μm/m)/hPa |
| Δpw | ¯0.09 μm/m for +10% |
| Δxc | +0.03 μm/m for +200 ppm |
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