Some results on the imaging of incoherent sources through turbulence

Details Some results on the imaging of incoherent sources through turbulence Some results on the imaging of incoherent sources through turbulence

Jun 1976

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976josa...66..574f&link_type=abstract

Optical Society of America, Journal, vol. 66, June 1976, p. 574-580.

Physics

2

Imaging Techniques, Interferometry, Radiation Sources, Spatial Filtering, Speckle Patterns, Turbulence Effects, Atmospheric Models, Atmospheric Turbulence, Feasibility Analysis, Fourier Transformation, Incoherence, Irradiance, Stellar Radiation

Scientific paper

The effect of the spatial-frequency content of an incoherent source (e.g., stars) on the feasibility of imaging the source through turbulence, using speckle interferometry and irradiance interferometry, is examined. Irradiance interferometry and speckle interferometry as applied to the problem are analyzed separately. Theoretical expressions are derived for evaluating turbulence effects on measurements of the magnitude of the spatial Fourier transform of an incoherent source by means of these interferometric techniques. Returns from different isoplanatic patches have to be processed separately in speckle interferometry, and nonisoplanacity may present a serious problem for stars near the horizon even though not for stars near the zenith.

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