Physics – Optics
Scientific paper
Mar 1995
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995josaa..12..570t&link_type=abstract
Journal of the Optical Society of America A, Vol. 12, No. 3, p. 570 - 577
Physics
Optics
2
Adaptive Optics: Signal-To-Noise Ratio
Scientific paper
The effects of turbulence-induced anisoplanatism cause the performance of an adaptive-optics system to be dependent on the angular separation between the object wave front being corrected and the wave front of the reference source. One method of quantifying this angular-dependent performance is through the average optical transfer function (OTF). An equally important measure is the variance of the OTF. The variance is used together with the average OTF in the definition of a signal-to-noise ratio (SNR). Knowledge of the SNR is essential for determining the spatial frequency limit of image restoration. The authors present a diffraction-based method of computing the object-angle-dependent OTF SNR for an adaptive-optics system. The SNR is computed with normalized correlation functions that are valid for a wide range of atmospheric turbulence profiles and beacon-object angles. The SNR results are presented for observation angles out to 6 times the isoplanatic angle as defined by Fried.
Roggemann Michael C.
Troxel Steven E.
Welsh Byron M.
No associations
LandOfFree
Anisoplanatism effects on signal-to-noise ratio performance of adaptive optical systems. does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Anisoplanatism effects on signal-to-noise ratio performance of adaptive optical systems., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Anisoplanatism effects on signal-to-noise ratio performance of adaptive optical systems. will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-845019