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	Design and DSP implementation of star image acquisition and Star point fast acquiring tracking (EI CONFERENCE)
	Zhou G. ; Wang X. ; Hao Z.
	2006
会议名称	2nd International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment, November 2, 2005 - November 5, 2005
会议地点	Zian, China
关键词	Star sensor is a special high accuracy photoelectric sensor. Attitude acquisition time is an important function index of star sensor. In this paper the design target is to acquire 10 samples per second dynamic performance. On the basis of analyzing CCD signals timing and star image processing a new design and a special parallel architecture for improving star image processing are presented in this paper. In the design the operation moving the data in expanded windows including the star to the on-chip memory of DSP is arranged in the invalid period of CCD frame signal. During the CCD saving the star image to memory DSP processes the data in the on-chip memory. This parallelism greatly improves the efficiency of processing. The scheme proposed here results in enormous savings of memory normally required. In the scheme DSP HOLD mode and CPLD technology are used to make a shared memory between CCD and DSP. The efficiency of processing is discussed in numerical tests. Only in 3.5ms is acquired the five lightest stars in the star acquisition stage. In 43us the data in five expanded windows including stars are moved into the internal memory of DSP and in 1.6ms five star coordinates are achieved in the star tracking stage.
收录类别	EI
内容类型	会议论文
源URL	[http://ir.ciomp.ac.cn/handle/181722/33716]
专题	长春光学精密机械与物理研究所_中科院长春光机所知识产出_会议论文
推荐引用方式 GB/T 7714	Zhou G.,Wang X.,Hao Z.. Design and DSP implementation of star image acquisition and Star point fast acquiring tracking (EI CONFERENCE)[C]. 见:2nd International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment, November 2, 2005 - November 5, 2005. Zian, China.

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