紫外CCD敏感器头部电路系统的研究

Research of Circuit System in CCD Ultraviolet Sensor for Probing Moon

介绍了我国探月工程之嫦娥一号卫星的紫外CCD敏感器系统的CCD电路的软硬件的开发研究．紫外CCD敏感器由光学结构、 CCD及处理线路、数据处理单元及其软件组成．入射光经光学系统后,照射在 CCD敏感元件,经视频处理电路处理后形成数字图像信号．数字图像信号保存在数据存储器中,由数据处理器进行分析处理．计算得到月球的中心并转换为探测器对月姿态角,其中紫外CCD敏感器头部电路包括CCD电路、时序电路、驱动电路、视频处理电路和电源电路．核心器件CCD采用E2V公司的CCD48-20芯片,文中重点介绍该CCD的时序、驱动和Smear等难点问题．

The research and development of CCD circuit, including both hardware and software are introduced in this paper. This circuit will be employed in the Ultraviolet Sensor （UVS） system of CE1 satellite, which is one of Chinese projects of detecting the moon. UV CCD sensor is made of optical structures, CCD and its processing circuit, Data Process Unit （DPU） and its software. The light of incidence goes iuto CCD, reflected by ichnographic mirror and thrilling through lens, and is transformed to digital signal by video processing circuit. The digital image signal is stored in data memory, and is analyzed by DPU. The calculated moon center is transformed to the attitude angle of detector to moon finally. UVS CCD circuit system includes CCD circuit, timing circuit, driver circuit, video process circuit and power circuit. The key device （CCD） is CCD48-20 from E2V company. It is detailedly introduced about CCD＇s timing and driving, smear problem, and so on.