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本文采用数值差分法计算产生各阶导数光谱值.将零价光谱值输入微机做程序运算,并利用微机的绘图功能绘制出导数光谱图,脱机获取各阶导数光谱.
In this paper, the numerical difference method is used to calculate the derivative spectra of each order, and the zero-value spectral value is input into the microcomputer to do the program operation, and the derivative spectrum is drawn by using the drawing function of the computer to obtain the derivative spectra of each step offline.