comnum.rytov_variance#

comnum.rytov_variance(cn2, wavelength_m, length_m)#

The Rytov variance σ₁² = 1.23 C_n² k^{7/6} L^{11/6} of a plane wave.

Parameters:

cn2 (float) – the refractive-index structure parameter (m^-2/3).
wavelength_m (float) – the wavelength (m).
length_m (float) – the length of the link (m).

Returns:

σ₁².

Return type: