Abstract
In this Letter we have analyzed the temporal correlations of the angle-of-arrival fluctuations of stellar images. Experimentally measured data were carefully examined by implementing multifractal detrended fluctuation analysis. This algorithm is able to discriminate the presence of fractal and multifractal structures in recorded time sequences. We have confirmed that turbulence-degraded stellar wavefronts are compatible with a long-memory correlated monofractal process. This experimental result is quite significant for the accurate comprehension and modeling of the atmospheric turbulence effects on the stellar images. It can also be of great utility within the adaptive optics field.
| Original language | English |
|---|---|
| Pages (from-to) | 3718-3721 |
| Number of pages | 4 |
| Journal | Optics Letters |
| Volume | 39 |
| Issue number | 13 |
| DOIs | |
| State | Published - 1 Jul 2014 |
| Externally published | Yes |
Keywords
- Probability theory, stochastic processes, and statistics
- Atmospheric optics
- Atmospheric propagation
- Atmospheric turbulence
- Wave-front sensing
- Astronomical optics