Abstract
In the theory of atmospheric turbulence, the strength of the spatial variations of the index of refraction n is characterized by the power spectral density (psd) where is the wavenumber vector. The magnitude of is proportional to a parameter known as the atmospheric structure constant of the refractive index fluctuations. The atmospheric structure constant is denoted and is a function of position along the optical path. In addition to spatial variations, n is also characterized by temporal variations. The strength of these temporal variations is directly related to the transverse velocity of the turbulence along the optical path, v.
© 1992 Optical Society of America
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