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2 February 2009 Study on detection sensitivity of EMCCD star tracker
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Star tracker is a high precise, high reliable attitude measurement component of spacecrafts, which plays a very important role in attitude measurement and control system. Unfortunately, in low light level, in order to obtain good quality image, the common CCD needs more time to integral light. This leads low data output and update slowly. In this paper, the star tracker based on a novel electronic multiply CCD (EMCCD) is introduced. EMCCD has very high sensitivity. The application of EMCCD is very finite in space explore field, although it has been applied by some country. At first, the detection sensitivity of EMCCD is analyzed, based on the signal detection theory in noise and optimal SNR threshold detection principle, and the detection sensitivity model is established. And then, the main noise sources of EMCCD are analyzed. Finally, as an example, a specific detection sensitivity calculation of EMCCD star tracker is provided with given optical parameters and exposure time.
© (2009) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Yufeng Li, Yanbo Liang, and Dongmei Li "Study on detection sensitivity of EMCCD star tracker", Proc. SPIE 7157, 2008 International Conference on Optical Instruments and Technology: Advanced Sensor Technologies and Applications, 715711 (2 February 2009);


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