Calculation and correction of piston phase aberration in synthesis imaging
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Authors
Eastwood, Richard J.
Johnson, Anne Marie
Greenaway, Alan H.
Subjects
Advisors
Date of Issue
2009-01
Date
Publisher
Optical Society of America
Language
Abstract
The principle of redundant spacings calibration has previously been described for the purpose of calibrating piston phase aberration affecting elements of a dilute aperture array using a system of linear equations in terms of the aperture phases as well as object phase information. Here we develop matrices for the correction of piston phase aberration by use of image sharpness and also by phase retrieval. these are both presented in wavefront sensor formulation in order to draw analogy between the approaches. We then discuss solution ambiguity affecting both methods and describe array design to prevent such ambiguity. the problem of increased image aliasing under image sharpness correction is also highlighted.
Type
Article
Description
The article of record as published may be found at http://dx.doi.org/1-84-7529/09/010195-11
Series/Report No
Department
Spacecraft Research and Design Center, Department of Mechanical and Astronautical Engineering
Organization
Naval Postgraduate School (U.S.)
Identifiers
NPS Report Number
Sponsors
The work presented here was carried out under the sponsorship of the Electro Magnetic Remote Sensing Defence Technology Centre (EMRS DTC), Particle Physics and Astronomy Research Council (PPARC), and the U.S. Air Force Office of Scientific Research (AFOSR) under Grant FA8655-05-1-3050.
Funder
Format
11 p.
Citation
Journal of Optical Society of America (A), v. 26, no.1 (January 2009)
Distribution Statement
Approved for public release; distribution is unlimited.
Rights
This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.