The fluctuations of spatially filtered starlight contain information about refractive turbulence strength (C2n) at the spatial filter wavenumber. If the turbulence at different heights in the atmosphere is moving at different speeds, the contribution to the fluctuations from those heights will occur at different frequencies. Therefore, the C2n profile can be inferred from the power spectrum of the fluctuations and the wind velocity profile. Vertical resolution is expected to be in the range of several hundred meters to about a kilometer. Turbulence strength measurements to better than 50% should be easily obtainable.
James H. Churnside and Steven F. Clifford, "Refractive turbulence profiling using stellar scintillation and radar wind profiles," Appl. Opt. 27, 4884-4890 (1988)