CAJ | 학술논문

为了减小探测器采集及软件处理导致的系统误差，提高光栅分辨率检测精度，利用半宽度法设计了一套满足李特洛条件的阶梯光栅分辨率检测系统。搭建了系统的光路，介绍了提高分辨率的方法，重点分析了探测器像元尺寸对系统分辨率测试精度的影响，提出了在LabVIEW软件中如何根据离散光谱信号并利用Catmull-Rom插值构造出连续光谱，提高半宽度法检测的精度。实验结果表明，在高分辨率测试系统中，通过软件算法对离散信号进行拟合分析，能有效的解决由像元尺寸造成的系统误差。
위료감소탐측기채집급연건처리도치적계통오차，제고광책분변솔검측정도，이용반관도법설계료일투만족리특락조건적계제광책분변솔검측계통。탑건료계통적광로，개소료제고분변솔적방법，중점분석료탐측기상원척촌대계통분변솔측시정도적영향，제출료재LabVIEW연건중여하근거리산광보신호병이용Catmull-Rom삽치구조출련속광보，제고반관도법검측적정도。실험결과표명，재고분변솔측시계통중，통과연건산법대리산신호진행의합분석，능유효적해결유상원척촌조성적계통오차。
In order to reduce the system error caused by detector acquiring and software processing,and improve the accuracy of echelon grating resolution,a resolution detection system which satisfied Littrow condition was designed by using the half wave width method. The optical structure of the detection system was built and the improved detection method was introduced. Then the grating resolution influenced by detector pixel size was analyzed. By using Catmull-Rom interpolation algorithm to fit a continuous spectral curve,the accuracy of half wave width according to the discrete spectrum was improved in LabVIEW. The experimental result also showed that the system error caused by pixel size can be effectively reduced by fitting analysis of discrete signal in the high resolution testing system.