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1 July 1990 Analysis of SILEX tracking sensor performance
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Two tracking sensor breadbroads have been developed for the European SILEX program. Critical requirements to be met by these sensors include the determination of the 1-sigma position of the focused laser spot on the detector surface to accuracies of less than 100 nm, with update frequencies as high as 8 kHz, and the minimum optical power level of 110 pW. The design is based on the use of a 14 x 14 pixel CCD array, where the spot position is determined to small subpixel accuracies over the central 2 x 2 pixel area via a centroiding algorithm executed in a microprocessor. Coarse position measurements are also made over the full area at rates up to 2 kHz.
© (1990) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Rajul P. Mathur, Christopher I. Beard, and David J. Purll "Analysis of SILEX tracking sensor performance", Proc. SPIE 1218, Free-Space Laser Communication Technologies II, (1 July 1990);

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