极紫外太阳爆发成像建模仿真与反演算法研究  

Modeling Simulation and Inversion Algorithm Research on Extreme Ultraviolet Solar Eruption Imaging

作　　者：宋佳丹 李亮[1,2] 彭吉龙[3] Song Jiadan;Li Liang;Peng Jilong(Department of Engineering Physics Tsinghua University,Beijing 100084 China;Key Laboratory of Particle Radiation Imaging Tsinghua University Ministry of Education,Beijing100084 China;Beijing Institute of Spacecraft Environment Engineering,Beijing 100094 China)

机构地区：[1]清华大学工程物理系,北京100084 [2]粒子技术与辐射成像教育部重点实验室(清华大学),北京100084 [3]北京卫星环境工程研究所,北京100094

出　　处：《光学学报》2021年第16期229-237,共9页Acta Optica Sinica

基　　金：国家重点研发计划“数字诊疗装备研发”重点专项(2017YFC0109103)。

摘　　要：为了提高对太阳活动等离子体运动速度探测的准确性,基于新型极紫外无缝成像光谱仪的五级次光谱成像设计,利用计算机断层成像和无缝成像光谱仪数据处理过程中的相似性,提出了一种新的用于求解太阳活动等离子体运动速度信息的三维重建算法。通过对仿真模型的重建,可以证明新算法的重建结果比现有算法的重建结果具有更高的准确性;同时,通过对比仿真结果,提出了更优的极紫外光谱成像系统设计方案。To improve the detection accuracy of solar activity plasma velocities,we propose a new three-dimensional reconstruction algorithm for the velocity information about solar activity plasma.This algorithm is based on the five-order spectral imaging design of the new extreme ultraviolet seamless imaging spectrometer and adopts the similarity between computed tomography and the data processing of the seamless imaging spectrometer.The reconstruction of the simulation model proves that the reconstruction results of the proposed algorithm are more accurate than those of the existing algorithms.Furthermore,a comparison of the simulation results provides a better design scheme for the extreme ultraviolet spectral imaging system.

关 键 词：光谱学 极紫外 光谱仪 无缝成像 太阳活动等离子体速度 计算机断层成像 

分 类 号：P171.1[天文地球—天文学]