Single snapshot performance simulations for POST Detection Turbulence Compensation

Details Single snapshot performance simulations for POST Detection Turbulence Compensation Single snapshot performance simulations for POST Detection Turbulence Compensation

Nov 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990spie.1351..807d&link_type=abstract

IN: Digital image synthesis and inverse optics; Proceedings of the Meeting, San Diego, CA, July 9-13, 1990 (A92-18776 05-74). Be

Physics

Optics

Atmospheric Turbulence, Computerized Simulation, Image Processing, Optical Transfer Function, Speckle Interferometry, Charge Coupled Devices, Fourier Transformation, Holography, Wave Front Reconstruction

Scientific paper

Post Detection Turbulence Compensation has been proposed as a technique to obtain diffraction limited imaging through the atmosphere. The technique consists of two simultaneous measurements, one made at a point conjugate to the pupil plane of an optical system and one at its focal plane. The optical transfer function of the atmosphere is constructed from the pupil plane measurement. This is then deconvolved from the focal plane image. The result is an image with a resolution at or near the diffraction limit of the imaging system. The process is highly nonlinear, and as a result the quality of the restored images is difficult to estimate analytically. In an attempt to understand the characteristics of this process, computer models have been developed to simulate speckle holography image compensation. Results of computer simulations showing reconstructed image quality versus light levels are presented.

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