Methods and apparatus for a structure function monitor provide for generation of parameters characterizing a refractive medium. In an embodiment, a structure function monitor acquires images of a pupil plane and an image plane and, from these images, retrieves the phase over an aperture, unwraps the retrieved phase, and analyzes the unwrapped retrieved phase. In an embodiment, analysis yields atmospheric parameters measured at spatial scales from zero to the diameter of a telescope used to collect light from a source.
GOVERNMENT INTEREST STATEMENT
This invention was made with Government support under Contract DE-AC04-94AL85000 awarded by the United States Department of Energy. The Government has certain rights in the invention.