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Proceedings Paper

Correlation tracker system for the Space Solar Telescope
Author(s): Aimin Jiang; Binxun Ye; Jinghao Sun; Guoxiang Ai
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Paper Abstract

A prototype of correlation tracker (CT) designed for the Space Solar Telescope (SST) has been realized in National Astronomical Observatories of CAS. We designed a special optical system for the development and test of the CT system. We estimate the image motion by cross-correlation method via FFT and take full advantage of the real-valued FFT to reduce the amount of calculation. For a possible realization of the processing unit used in space, we use a "1 bit correlation" method, which will greatly simplify the hardware implementation of FFT. A resolution of 0.01" has been obtained corresponding to the object space of the telescope, with the -3dB closed-loop error cutoff frequency of 38Hz along x axis and 40Hz along y-axis achieved.

Paper Details

Date Published: 7 February 2003
PDF: 5 pages
Proc. SPIE 4839, Adaptive Optical System Technologies II, (7 February 2003); doi: 10.1117/12.457023
Show Author Affiliations
Aimin Jiang, National Astronomical Observatories (China)
Binxun Ye, National Astronomical Observatories (China)
Jinghao Sun, National Astronomical Observatories (China)
Guoxiang Ai, National Astronomical Observatories (China)

Published in SPIE Proceedings Vol. 4839:
Adaptive Optical System Technologies II
Peter L. Wizinowich; Domenico Bonaccini, Editor(s)

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