Method and device for eliminating Fourier deconvolution ion mobility spectrometry baseline ambiguity

The invention provides a method and device for eliminating Fourier deconvolution ion mobility spectrometry baseline ambiguity, and the method comprises the steps: employing a Fourier deconvolution gating unit to generate a Fourier deconvolution gating modulation pulse signal, and transmitting the signal to an ion gate control unit to achieve the multiplexing control of an ion gate, and performing Fourier deconvolution on an ion signal collected by a detector and the gating modulation pulse signal to obtain an ion mobility spectrometry primary signal, and performing ion gate induction pulse zero filling, Fourier transform, low-pass filtering and inverse Fourier transform on the ion mobility spectrometry primary signal to obtain an ion mobility spectrometry. According to the method, Fourier deconvolution ion mobility spectrometry baseline ambiguity can be eliminated, interference of ion gate induction pulses on effective signals is eliminated, the signal-to-noise ratio of the Fourier deconvolution ion mobility