Asynchronous acquisition method based on Fourier transform spectrometer and Fourier transform spectrometer

The invention relates to a data processing technology, and discloses an asynchronous acquisition method based on a Fourier transform spectrometer and the Fourier transform spectrometer, and the method comprises the following steps: synchronous acquisition: simultaneously acquiring a laser light source and a broadband light source, forming a spectrum through Fourier transform, and synchronously recovering the spectrum F0; a broadband light source is independently collected, a laser light source is turned off, broadband light source collection and laser interference adjustment are carried out, laser interference adjustment is carried out through synchronous variability between broadband light interference and laser interference, and therefore laser interference L1 matched with broadband light interference W1 is obtained. According to the invention, broadband light and laser used for marking adopt an asynchronous acquisition mode to acquire two paths of signals at different time, so that signal crosstalk is avoi