Michael Roggemann (Pacific Defense Solutions), Paul A. Billings (Textron Corporation), Jeffery Houchard (Pacific Defense Solutions)
Keywords: Imaging
Abstract:
Under most situations where it is appropriate to use multi-frame blind deconvolution (MFBD) image reconstruction, defects in the point spread function (PSF) are dominated by phase errors attributed to atmospheric tubulence. However, under extreme conditions, such as horizontal imaging, or imaging at low elevation angles, scintillation can also arise, and these amplitude errors also contribute to the degradation of the PSF. MFBD algorithms which parameterize the phase aberrations in the pupil generally neglect pupil intensity information. The key issue addressed in this paper is whether incorporating information about the pupil intensity in an MFBD algorithm improves the accuracy of the reconstruction. We used a numerical simulation approach to address this issue. The results of this study show that incorporating pupil intensity information improves the quality of the reconstructed images only slightly.
Date of Conference: September 12-15, 2007
Track: Imaging