【作者】 刘文光； 王晓东；

【Author】 Liu Wenguang Wang Xiaodong(Changchun Institute of Optics,Fine Mechanics and Physics,Chinese Academy of Sciences,Changchun 130033,China)

【机构】 中国科学院长春光学精密机械与物理研究所；

【摘要】 月基极紫外光子计数成像仪通过对30.4nm的He+粒子谐振散射分布进行成像,从而对地球等离子体层的分布进行研究。信息处理系统是月基极紫外光子计数成像仪获取高分辨率图像信息的关键部分,以反熔丝型FPGA为核心进行信息处理系统设计,完成了对图像信号的放大、整形、保持、量化、采集和传输等重要功能控制。实验结果表明,信息处理系统的最高采样率为200kbps,量化位数为12位,模拟量控制精度为1mv,空间分辨率达到280μm。更多还原

【Abstract】 Moon-based extreme ultraviolet photon-counting imaging detector aims at 30.4nm resonant scattering distribution of He +,thus studying the distribution of the earth plasma layer.Information processing system is the key of moon-based extreme ultraviolet photon-counting imaging detector obtaining high-resolution image,using antifuse FPGA for the design of information processing system,thus completing the image signal amplification,shaping,maintaining,quantification,capture and transfer control of important functions.Experimental results show that the maximum sampling rate is 200kbps,the quantitative number is 12bits,the precision of analog control is 1mv,the spatial resolution is 280μm.更多还原