基于传递函数的光谱数据处理方法研究

传递函数是评价一个系统性能的重要参数,是信息处理与分析的主要手段之一.本文首先使用理论模拟分析了使用传递函数方法处理光谱测量数据的可行性,然后通过对中值滤波和Db3小波滤波方法的比较,选取中值滤波对光谱数据去噪,在此基础上,将传递函数方法用于线阵CCD光谱仪实测数据处理并得到了实验验证.实验结果表明,本文给出的基于传递函数的光谱数据处理方法可行,经本方法处理后,可以进一步提高仪器的测量精度和分辨率,为CCD光谱仪的广泛应用提供了可能.

Study on the spectral data processing method based on the transfer function

Transfer function is an very important parameter to evaluate the system performance,and it is one of the key method to process and analyze information.First,the feasibility of this method is analyzed by theory simulation in this paper.Second,the median is selected to filtering the noise in the spectral data by comparing median filtering and Db3 wavelet filtering results.And then,the transfer function method is used on the data processing that captured by linear CCD spectrometer,and the experimental verification is made.The experiment results show that the spectral data processing method base on the transfer function given in this paper is reasonable.This method can further improve the accuracy and the resolution of the instrument,and can make it to possible to get wide application of CCD spectrometer.