期刊论文

中文

核技术

0253-3219

2024

47

03

55-64

10.11889/j.0253-3219.2024.hjs.47.030401

本校为第一机构

东方超环(Experimental Advanced Superconducting Tokamak,EAST)全超导托卡马克装置上极紫外(Extreme Ultraviolet,EUV)光谱诊断系统采用电荷耦合器件(Charge Coupling Device,CCD)探测器集光谱图像数据,硬X射线对CCD产生的干扰造成光谱数据中存在大量的单像素噪声,这为准确分析聚变等离子体杂质辐射带来极大的困难.针对这一问题,设计了一套基于可编程门阵列(Field Programmable Gate Array,FPGA)的EUV光谱图像处理系统,来快速去除硬X射线产生的噪声干扰.该系统基于限幅滤波算法,并引入标准差和离均差替代固定限幅阈值和样本偏差;通过融合限幅滤波算法和数据判别法,外加设置算法工作区间来分阶...

[Background]During the data acquisition of an extreme ultraviolet(EUV)spectroscopic diagnostic system in experimental advanced superconducting Tokamak(EAST),significant amounts of one-pixel noises are consistently observed.This is attributed to the influence of hard X-ray on the charge coupling device(CCD)detector.[Purpose]This study aims to detect and denoise spectral images in the EUV spectral image processing system based on the field programmable gate array(FPGA).[Methods]First of all,based on limiting filtering algorithm,spectral image processing was optimized by replacing fixed limiting ...