THE ELIMINATION OF BRIGHT CONTINUOUS SPECTRAL BACKGROUND IN SPECTROGRAM BY MEANS OF COHERENT OPTICAL PROCESSING | Zendy

Guoguang Mu | Zendy; KANG HUI | Zendy; Zhengming Li | Zendy

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THE ELIMINATION OF BRIGHT CONTINUOUS SPECTRAL BACKGROUND IN SPECTROGRAM BY MEANS OF COHERENT OPTICAL PROCESSING

Author(s) -

Guoguang Mu,

KANG HUI,

Zhengming Li

Publication year - 1980

Publication title -

acta physica sinica

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.199

H-Index - 47

ISSN - 1000-3290

DOI - 10.7498/aps.29.794

Subject(s) - spectrogram , optics , continuous spectrum , fourier transform , physics , filter (signal processing) , point (geometry) , optical filter , computer science , speech recognition , mathematics , computer vision , geometry , quantum mechanics

From the point of view of the optical information processing, we consider the spectrogram in which the spectral lines are immersed in the bright continuous background as a low contrast optical picture. By means of the coherent optical processing system and a special high-pass filter, the Fourier spectrum of the continuous background can be reduced and then the final result may appear as a spactrogram without continuous background. This may be considered as a new method for enhancement of the ratio S/N of a spectrogram.

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