Atmospheric Effects on Space Object Imagery
Interim technical rept. 15 Jan 1974-1 Jun 1974
OHIO STATE UNIV COLUMBUS ELECTROSCIENCE LAB
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This project deals with the efficient computer simulation of atmospherically degraded light beams. Such simulations are expected to be of use in the computer modeling of the operation of many optical devices sensing atmospherically degraded light, e.g., telescopes and cameras. Two methods of generating random phase and log-amplitude fields entering a receiver aperture are investigated. The first method generates a set of random arrays and tailors them so as to have the requisite probability distribution and covariance. The second The second Karhuen-Loeve method generates a set of eigenfunctions having the correct covariance. The series is then summed using random coefficients to provide one member of the set of wavefronts. Finally, to assure that the computer generated arrays represent the real atmosphere as accurately as possible the relationship between the random arrays and atmospherically degraded log-amplitude and phase fronts is explored.