Application of the flicker noise filtering algorithm by changing the modulation frequency in an acousto-optic spectrum analyzer
The article discusses the noise characteristics of the system for collecting data and processing spectral signals in an ozonometer. Low-frequency flicker noise introduces significant distortions into the useful signal path. In order to reduce low-frequency flicker noise, a method was developed based...
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| Veröffentlicht in: | IOP conference series. Materials Science and Engineering 2021-02, Vol.1047 (1), p.12113 |
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| creator | Tryapitsyn, V L Kruglov, S K |
| description | The article discusses the noise characteristics of the system for collecting data and processing spectral signals in an ozonometer. Low-frequency flicker noise introduces significant distortions into the useful signal path. In order to reduce low-frequency flicker noise, a method was developed based on the use of modulation of the useful signal at the output of the acousto-optic spectrum analyzer with a certain frequency. This method creates an artificial filter. The choice of the modulation frequency determines the frequency response of this filter. It is necessary to choose it such that the maximum signal attenuation is in the low frequency region, where the influence of flicker noise is strong. In this work, a noise signal was simulated using the Matlab environment and its filtering by changing the modulation frequency of the synthesized signal. |
| doi_str_mv | 10.1088/1757-899X/1047/1/012113 |
| format | Article |
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| subjects | Acousto-optics Algorithms Attenuation Filtration Flicker Frequency response Modulation Noise Noise reduction Signal processing Spectrum analysers |
| title | Application of the flicker noise filtering algorithm by changing the modulation frequency in an acousto-optic spectrum analyzer |
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