The numerical examination of spectra of stellar scintillations observed through the Earth's atmosphere from space is carried out. Three models of 3D spectra of inhomogeneities forming scintillations are considered: isotropic, anisotropic, and inhomogeneities with a variable anisotropy. 2D and 1D scintillation spectra were calculated for a phase screen model in the approximation of week scintillations. It is shown, that 1D spectra for different models can be close to each other. The taking into account of a variable anisotropy does not change considerably the character of spectra in comparison with model of inhomogeneities with constant anisotropy.
sounding of atmosphere from space, turbulence, anisotropic and isotropic irregularities, variable anisotropy, weak scintillation spectra