Academic Journal
An improved iterative data processing method for variable gap spectrometer and its validation.
| Τίτλος: | An improved iterative data processing method for variable gap spectrometer and its validation. |
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| Συγγραφείς: | Song, Yue, Jianjun, Lai, Pingwei, Liu, Yangdao, Wei |
| Πηγή: | Journal of Modern Optics; Nov/Dec2025, Vol. 72 Issue 19-21, p959-968, 10p |
| Θεματικοί όροι: | Fast Fourier transforms, Signal-to-noise ratio, Interferometry, Spectrometers, Iterative methods (Mathematics), Numerical solutions to equations, Electronic data processing, Harmonics (Music theory) |
| Περίληψη: | Since the multi-beam interference can generate interfered signals in a variable-gap spectrometer, the output can be a combination of sinusoidal-like signals. Thus, the application of the Fast Fourier Transform to the interferometric information produces the appearance of higher-order harmonics in the frequency domain. Furthermore, the superposition of these may lead to the deformation of the spectral signal and a reduction in the signal-to-noise ratio. An improved data processing method is proposed herein that iteratively approximates a numerical solution to retrieve the fundamental frequency signal. A precise analytical expression can be derived to obtain the mixed signal from the fundamental frequency signal. However, reversing this process to determine the fundamental frequency signal from the mixed signal is challenging. To address this concern, we introduce an approximate iterative numerical method.The proposed approach demonstrates significant improvements and helps process data collected from the variable-gap spectrometer based on extensive simulations and experimentation. [ABSTRACT FROM AUTHOR] |
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| Βάση Δεδομένων: | Complementary Index |
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