1.
Opt Lett
; 39(4): 789-92, 2014 Feb 15.
Artículo
en Inglés
| MEDLINE
| ID: mdl-24562207
RESUMEN
Previous studies have shown that the isoplanatic angle (θ0) can be measured by using plane-wave scintillation. The problem of measuring the isoplanatic angle in a finite distance using spherical-wave scintillation is considered in this Letter. Based on theoretical analysis and numerical evaluation, we found that by selecting suitable aperture size and aperture separations, the isoplanatic angle can be estimated through spherical-wave scintillation and covariance of irradiance in three received apertures using a point source. The error of θ0 measured by this method is less than 6% in typical turbulence models.