|
BEACON eSpace at Jet Propulsion Laboratory >
JPL Technical Report Server >
JPL TRS 1992+ >
Please use this identifier to cite or link to this item:
http://hdl.handle.net/2014/42402
|
| Title: | Experimental validation of Advanced Dispersed Fringe Sensing (ADFS) algorithm using Advanced Wavefront sensing and Correction Testbed (AWCT) |
| Authors: | Wang, Xu
Shi, Fang
Sigrist, Norbert
Seo, Byoung-Joon
Tang, Hong
Bikkannavar, Siddarayappa
Basinger, Scott
Lay, Oliver |
| Keywords: | Dispersed Fringe Sensing (DFS)
Advanced Dispersed Fringe Sensing (ADFS)
advanced wavefront sensing and correction testbed (AWCT) |
| Issue Date: | 1-Jul-2012 |
| Publisher: | Pasadena, CA : Jet Propulsion Laboratory, National Aeronautics and Space Administration, 2012. |
| Citation: | SPIE Astronomical Telescopes+Instrumentation, Amsterdam, Netherlands, July 1-6, 2012 |
| Abstract: | Large aperture telescope commonly features segment mirrors and a coarse phasing step is needed to bring these individual segments into the fine phasing capture range. Dispersed Fringe Sensing (DFS) is a powerful coarse phasing technique and its alteration is currently being used for JWST.
An Advanced Dispersed Fringe Sensing (ADFS) algorithm is recently developed to improve the performance and robustness of previous DFS algorithms with better accuracy and unique solution. The first part of the paper introduces the basic ideas and the essential features of the ADFS algorithm and presents the some algorithm sensitivity study results. The second part of the paper describes the full details of algorithm validation process through the advanced wavefront sensing and correction testbed (AWCT): first, the optimization of the DFS hardware of AWCT to ensure the data accuracy and reliability is illustrated. Then, a few carefully designed algorithm validation experiments are implemented, and the corresponding data analysis results are shown. Finally the fiducial calibration using Range-Gate-Metrology technique is carried out and a <10nm or <1% algorithm accuracy is demonstrated. |
| URI: | http://hdl.handle.net/2014/42402 |
| Appears in Collections: | JPL TRS 1992+
|
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.
|
