Advanced DFS: a dispersed fringe sensing algorithm insensitive to small calibration errors

Joshua A. Spechler; Daniel J. Hoppe; Norbert Sigrist; Fang Shi; Byoung-Joon Seo; Siddarayappa Bikkannavar

doi:10.1117/12.856510

9 August 2010 Advanced DFS: a dispersed fringe sensing algorithm insensitive to small calibration errors

Joshua A. Spechler, Daniel J. Hoppe, Norbert Sigrist, Fang Shi, Byoung-Joon Seo, Siddarayappa Bikkannavar

Proceedings Volume 7731, Space Telescopes and Instrumentation 2010: Optical, Infrared, and Millimeter Wave; 773155 (2010) https://doi.org/10.1117/12.856510
Event: SPIE Astronomical Telescopes + Instrumentation, 2010, San Diego, California, United States

Abstract

Dispersed Fringe Sensing (DFS) is an elegant method of coarse phasing segmented mirrors. DFS performance accuracy is dependent upon careful calibration of the system as well as other factors such as internal optical alignment, system wavefront errors, and detector quality. Novel improvements to the algorithm have led to substantial enhancements in DFS performance. In this paper, we present Advanced DFS, an advancement of the DFS algorithm, which allows the overall method to be less sensitive to calibration errors. This is achieved by correcting for calibration errors, which appear in the fitting equations as a signal phase term. This paper will outline a brief analytical explanation of the improvements, results of advanced DFS processed simulations and experimental advanced DFS results.

Citation Download Citation

Joshua A. Spechler, Daniel J. Hoppe, Norbert Sigrist, Fang Shi, Byoung-Joon Seo, and Siddarayappa Bikkannavar "Advanced DFS: a dispersed fringe sensing algorithm insensitive to small calibration errors", Proc. SPIE 7731, Space Telescopes and Instrumentation 2010: Optical, Infrared, and Millimeter Wave, 773155 (9 August 2010); https://doi.org/10.1117/12.856510

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available