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本工作以Ｋａｌｍａｎ滤波技术为光谱干扰校正方法，选择典型的光谱干扰为例，系统研究了波长定位误差影响滤波结果准确性的规律性，提出了改善波长定位精度的途径。对于谱线重叠干扰的校正，波长定位精度一般应优于０．１ｐｍ；利用新息序列零均白噪音特性建立指示函数优化扫描光谱峰位，大大提高了波长定位精度，保证了滤波结果的准确性。
In this paper, the Kalman filtering technique is used as the method of spectral interference correction, and the typical spectral interference is chosen as an example. The regularity of the accuracy of the filtering results influenced by the wavelength localization errors is systematically studied, and the ways of improving the wavelength localization accuracy are proposed. For the correction of overlapped line interference, the wavelength positioning accuracy should generally be better than 0.1pm. Using the zero-mean white noise of the new interest sequence to establish the indication function to optimize the peak position of the scanning spectrum greatly improves the wavelength positioning accuracy and ensures the accurate filtering result Sex.