EUV成像仪信号处理设计与实现  

Design and Realization of Signal Processing System of the Extreme Ultraviolet imager

作　　者：程炳钧[1] 孙越强[1] 李磊[1] 陶鹏[1] 王劲东[1] 

机构地区：[1]中国科学院空间科学与应用研究中心

出　　处：《科学技术与工程》2008年第9期2381-2384,共4页Science Technology and Engineering

摘　　要：极紫外成像仪通过对于30.4nm的He+谐振散射分布进行成像,从而对地球等离子体层的冷等离子体分布进行研究。极紫外成像仪采用单光子成像技术,通过记录到达成像仪像平面的每个光子的位置,并经过时间积累达到总体成像的目的。信号处理部分是极紫外成像仪的核心部分,担负着对来自传感器探头的信号进行采集、分析、处理的重任。其基于DSP系统设计,以快速实时为设计要求,并配合模块化的软件程序完成成像工作。通过实验室仿真实验测试,极紫外成像仪信号处理系统工作稳定,符合系统设计要求。The Extreme Ultraviolet （EUV） Imager will study the distribution of the cold plasma in Earth＇ s plasmasphere by imaging the resonantly-scattered emission of He^＋ at 30.4 nm. The EUV imager uses the technique of Single photon imaging. It can get the image according to calculate the coordinates of the single photon, catched by detectors, and accumulate these coordinates for a cycle. Signal processing part is heart of the EUV imager. Its main task is collecting, analyzing and processing the signals from detectors. The hardware of signal processing is designed by real time, and it can be working well with the help of software. The result of the lab emulational experiment has been given at last, which proved that the designing of signal processing system is up to required.

关 键 词：极紫外成像 单光子成像 数字信号处理 

分 类 号：TP73[自动化与计算机技术—检测技术与自动化装置] V44[自动化与计算机技术—控制科学与工程]