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- W1975207952 abstract "Abstract Anovel profile detection method is proposed for astronomical fiber spectrum data with low signalto-noise ratio. This approach can be applied to the pretreatment for 2-D astronomical spectrum data before the extraction of spectra. The Wigner bispectrum, a classical higher-order spectrum analysis method, is introduced and applied to deal with the spectrumsignal in this article.After analyzing the Wigner higher-order spectra distribution of the target profile signal, the combination of the Wigner bispectrum algorithm and the fast Fourier transform algorithm is used to weaken the effect of the noise to obtain more accurate information. Both the reconstruction method of the Wigner bispectrum and inverse fast Fourier transform are used to acquire the detection signal. At the end of this paper, experiments with both simulated and observed data based on the Large Sky Area Multi-Object Fiber Spectroscopy Telescope project are presented to demonstrate the effectiveness of the proposed method." @default.
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- W1975207952 date "2011-01-01" @default.
- W1975207952 modified "2023-09-26" @default.
- W1975207952 title "An Efficient Profile Detection Method for Fiber Spectrum Images with Low SNR Based on Wigner Bispectrum" @default.
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- W1975207952 doi "https://doi.org/10.1071/as11012" @default.
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