Reconstruction of atmospheric turbulence degraded images using the Knox and Thomson algorithm. Theoretical and experimental study
- 1 January 1984
- journal article
- Published by IOP Publishing in Journal of Optics
- Vol. 15 (1) , 15-23
- https://doi.org/10.1088/0150-536x/15/1/002
Abstract
The Knox and Thomson algorithm (see Astrophys. J., vol.193, p.L45, 1974) enables the reconstruction of atmospheric turbulence degraded images. The limitations of this method are described. The uncertainty related to this technique has been calculated by taking into account the noise and turbulence effects. This uncertainty has been evaluated as the r.m.s. value of the reconstructed object Fourier transform phase. The experimental verification has been achieved in an atmospheric turbulence simulation cell with one dimensional images. Different noise levels and turbulence strengths have been considered. The results are in good agreement with the theoretical results. For two dimensional images, the application field of this technique has been theoretically estimated as a function of the minimal photon number per speckle.Keywords
This publication has 2 references indexed in Scilit:
- Real-time atmospheric compensationJournal of the Optical Society of America, 1977
- Recovery of images from atmospherically degraded short-exposure photographsThe Astrophysical Journal, 1974