光学学报, 2020, 40 (8): 0830003, 网络出版: 2020-04-13
星载傅里叶变换红外光谱仪的脉冲噪声抑制方法 
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Method for Suppression of Impulse Noise in Spaceborne Fourier Transform Infrared Spectrometer
图 & 表
图 1. 含脉冲噪声的干涉图。(a)扫描转动部件驱动电路未使能时获取的干涉图;(b)扫描转动部件驱动电路使能时获取的干涉图;(c)对应图1 (a)的纵向拉伸显示;(d)对应图1 (b)的纵向拉伸显示
Fig. 1. Interferograms with impulse noise. (a) Interferogram recorded when the drive circuit of scanning motor is disabled; (b) interferogram recorded when the drive circuit of scanning motor is enabled; (c) stretched display corresponding to Fig. 1 (a); (d) stretched display corresponding to Fig. 1 (b)
图 2. 干涉图噪声。(a)扫描转动部件驱动电路未使能时;(b)扫描转动部件驱动电路使能时
Fig. 2. Noise of interferograms. (a) When the drive circuit of scanning motor is disabled; (b) when the drive circuit of scanning motor is enabled
图 3. 滤除固定低频噪声后的干涉图噪声。(a)扫描转动部件驱动电路未使能时;(b)扫描转动部件驱动电路使能时
Fig. 3. Noise of interferograms after the low-frequency fixed noise is filtered. (a) When the drive circuit of scanning motor is disabled; (b) when the drive circuit of scanning motor is enabled
图 7. 低频固定噪声与高斯噪声频谱
Fig. 7. Frequency spectra of low-frequency fixed noise and Gaussian noise
图 10. 不同脉冲噪声抑制方法的光谱相对偏差
Fig. 10. Spectral relative deviation of different impulse noise suppressing methods
图 11. 脉冲噪声抑制结果。 (a) Amax=30,R=0.01;(b) Amax =60,R=0.01;(c) Amax =60,R=0.1;(d) Amax =60,R=0.05
Fig. 11. Results of impulse noise suppression. (a) Amax=30, R=0.01; (b) Amax =60, R=0.01; (c) Amax =60, R=0.1; (d) Amax =60, R=0.05
图 12. 脉冲噪声抑制前后的干涉图对比
Fig. 12. Interferogram comparison before and after impulse noise suppression
表 1脉冲噪声抑制后光谱的相对偏差对比
Table1. Comparison of relative deviation after impulse noise suppression
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郭玲玲, 赵其昌, 杨勇, 汪少林, 舒锐. 星载傅里叶变换红外光谱仪的脉冲噪声抑制方法[J]. 光学学报, 2020, 40(8): 0830003. Lingling Guo, Qichang Zhao, Yong Yang, Shaolin Wang, Rui Shu. Method for Suppression of Impulse Noise in Spaceborne Fourier Transform Infrared Spectrometer[J]. Acta Optica Sinica, 2020, 40(8): 0830003.
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