Michael Roggemann (Michigan Technological University), Grant Soehnel (Michigan Technological University), Glen E. Archer (Michigan Technological University), Timothy J. Schulz (Michigan Technological University)
Keywords: Imaging
Abstract:
Increasing the volume of space which can be monitored for space situational awareness activities requires the ability to form useful images of objects at larger zenith angles, perhaps approaching 70 to 80 degrees. At these zenith angles the atmospheric seeing conditions, as characterized by the Fried parameter, the isoplanatic angle, and the variance of the log amplitude fluctuations, are extremely unfavorable for imaging. In this paper we provide an analysis of the expected seeing conditions in this environment, and discuss our approach to wave front sensing and turbulence-induced aberration control. A hybrid imaging technique is used in which adaptive optics images are post processed. An expectation maximization algorithm is used to post process the images to remove residual blur.
Date of Conference: September 10-14, 2006
Track: Imaging