Physics – Optics
Scientific paper
Dec 2003
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003spie.5169..276g&link_type=abstract
Astronomical Adaptive Optics Systems and Applications. Edited by Tyson, Robert K.; Lloyd-Hart, Michael. Proceedings of the SPI
Physics
Optics
Scientific paper
The Princeton University Terrestrial Planet Finder (TPF) has been working on a novel method for direct imaging of extra solar planets using a shaped-pupil coronagraph. The entrance pupil of the coronagraph is optimized to have a point spread function (PSF) that provides the suppression level needed at the angular separation required for detection of extra solar planets. When integration time is to be minimized, the photon count at the planet location in the image plane is a Poisson distributed random process. The ultimate limitation of these high-dynamic-range imaging systems comes from scattering due to imperfections in the optical surfaces of the collecting system. The first step in correcting the wavefront errors is the estimation of the phase aberrations. The phase aberration caused by these imperfections is assumed to be a sum of two-dimensional sinusoidal functions. Its parameters are estimated using a global search with a genetic algorithm and a local optimization with the BFGS quasi-Newton method with a mixed quadratic and cubic line search procedure.
Give'on Amir A.
Gurfil Pini
Kasdin Jeremy N.
Littman Michael G.
Spergel David N.
No associations
LandOfFree
Stochastic optimal phase retrieval algorithm for high-contrast imaging does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Stochastic optimal phase retrieval algorithm for high-contrast imaging, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Stochastic optimal phase retrieval algorithm for high-contrast imaging will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1731638