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An Adaptive Cross-Correlation Algorithm for Extended-Scene Shack-Hartmann Wavefront SensingThis viewgraph presentation reviews the Adaptive Cross-Correlation (ACC) Algorithm for extended scene-Shack Hartmann wavefront (WF) sensing. A Shack-Hartmann sensor places a lenslet array at a plane conjugate to the WF error source. Each sub-aperture lenslet samples the WF in the corresponding patch of the WF. A description of the ACC algorithm is included. The ACC has several benefits; amongst them are: ACC requires only about 4 image-shifting iterations to achieve 0.01 pixel accuracy and ACC is insensitive to both background light and noise much more robust than centroiding,
Document ID
20080009773
Acquisition Source
Jet Propulsion Laboratory
Document Type
Conference Paper
External Source(s)
Authors
Sidick, Erkin
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Green, Joseph J.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Ohara, Catherine M.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Redding, David C.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Date Acquired
August 24, 2013
Publication Date
June 18, 2007
Subject Category
Instrumentation And Photography
Meeting Information
Meeting: Signal Recovery and Synthesis (SRS) Topical Meeting
Location: Vancouver, British Columbia
Country: Canada
Start Date: June 18, 2007
End Date: June 20, 2007
Distribution Limits
Public
Copyright
Other
Keywords
Terrestrial Planet Finder (TPF)
speckle nulling
coronagraph
integrated modelling

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