Physics – Optics
Scientific paper
May 1976
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976josa...66..460s&link_type=abstract
Optical Society of America, Journal, vol. 66, May 1976, p. 460-469.
Physics
Optics
4
Atmospheric Turbulence, Imaging Techniques, Light Transmission, Turbulence Effects, Wave Propagation, Atmospheric Optics, Green'S Functions, Huygens Principle, Image Filters, Incoherent Scattering, Matched Filters, Root-Mean-Square Errors
Scientific paper
The relationship between the optimum channel-matched filter compensator and real-time phase-compensated atmospheric imaging is quantified, with emphasis on the fundamental limits imposed by the propagation medium, i.e., the effects of atmospheric turbulence. Assuming that the instantaneous atmospheric Green function is exactly shift invariant and that scintillation may be neglected, the channel-matched filter reduces to a phase compensated system where the necessary phase information can be obtained from a point-source reference. The effects of uncompensated amplitude fluctuations and finite isoplanatic diameter are evaluated, indicating that the former does not usually limit imaging performance, while the latter may severely limit the field of view over which diffraction-limited imaging can be realized.
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