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7 February 2003 Correlation tracker system for Space Solar Telescope
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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.
© (2003) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Aimin Jiang, Binxun Ye, Jinghao Sun, and Guoxiang Ai "Correlation tracker system for Space Solar Telescope", Proc. SPIE 4839, Adaptive Optical System Technologies II, (7 February 2003);


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