RETRIEVAL OF TURBULENCE SPECTRUM FROM TEMPORAL SPECTRUM OF A LIGHT WAVE PROPAGATING THROUGH ATMOSPHERE: PRINCIPLE AND SIMULATIONS
从光闪烁频谱反演大气湍流谱:原理与数值模拟

A numerical algorithm is set up for the retrieval of optical turbulence spectrum from high-frequency temporal spectra of a light wave propagating through a turbulent atmosphere. This technique has two advantages. First, the retrieved spectrum is directly related to the refractive index fluctuation rather than temperature fluctuation. Second, the turbulence spectrum at rather high spatial wavenumber, most in the dissipation range, can be retrieved. We test the retrieval procedure through carrying out a lot of simulations with Hill turbulence model and a composed model. It is found that if the wind velocity and the turbulence inner scale are known correctly the turbulence spectrum can be achieved effectively.