STEPWISE SUPERPOSITION-BASED FOURIER TRANSFORM DIFFERENTIAL METHOD
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May 16, 2024
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Sep 26, 2021
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May 7, 2021
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The invention relates to a stepwise superposition-based Fourier transform differentiation method, which comprises the following steps: S1, sampling an analytic signal in a finite time domain, converting the analytic signal into a discrete spectrum, and identifying spectral peak vertexes through a differential curve of the spectrum; S2, superposing the peak vertexes in the spectrum in a stepped manner according to the principle of superposition-based Fourier transform; and S3, differentiating the spectrum after the stepwise superposition to obtain a stepwise superposition-based Fourier transform differential spectrum or image. The invention not only potently improves the resolution and sensitivity, but also greatly saves computing time.
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