title: Degradation of an image by Gaussian longitudinal motion.
abstract: The effect of random longitudinal motion of an image is discussed. Numerical results are given for systems with circular and annular pupils. It is shown that, for a given value of the image motion, the time-averaged Strehl ratio is larger for a larger value of the obscuration ratio of an annular pupil. We also show that the time-averaged image irradiance distribution near its center and the corresponding encircled power can be obtained from their aberration-free values by multiplying them by the Strehl ratio.
authors.affiliation: The Aerospace Corporation, El Segundo, California 90245, USA. virendra.n.mahajan@aero.org
authors.forename: Virendra N
authors.initials: VN
authors.lastname: Mahajan
mesh_terms: D004867:Equipment Design; D007091:Image Processing, Computer-Assisted / Q000379:methods*; D015233:Models, Statistical; D008962:Models, Theoretical; D009038:Motion; D016011:Normal Distribution; D055095:Optics and Photonics; D013997:Time Factors