Method of Phase Diversity in Multi-aperture Systems Utilizing Individual Sub-aperture Control
نویسندگان
چکیده
Multi-aperture systems allow a natural method of implementing phase diversity for the joint estimation of both pupil aberrations and an image of the object. Instead of creating diversity images by means of focus adjustments, one can actuate the individual sub-apertures of the system (e.g., with a piston phase) to introduce known phase diversity. Implementation of a nonlinear optimization routine is discussed. Through digital simulation, this paper investigates the performance of a sub-aperture piston diversity algorithm by tracking Strehl ratio and the probability and speed of convergence of the nonlinear optimization routine.
منابع مشابه
Sub-aperture piston phase diversity for segmented and multi-aperture systems.
Phase diversity is a method of image-based wavefront sensing that simultaneously estimates the unknown phase aberrations of an imaging system along with an image of the object. To perform this estimation a series of images differing by a known aberration, typically defocus, are used. In this paper we present a new method of introducing the diversity unique to segmented and multi-aperture system...
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