Lightweight distributed optical fiber sensing event identification method and system

The invention belongs to the related technical field of optical fiber sensing event image recognition, and provides a distributed optical fiber sensing event recognition method and system based on lightweight, and the method comprises the steps: converting distributed sensor event time sequence signal data into a Markov transition field two-dimensional image based on a Markov transition field; pre-training an established teacher network model by using the obtained image; performing first-order knowledge distillation training of a middle feature layer on the established student network model by using a pre-trained teacher network model; performing second-order knowledge distillation training on the output feature layer of the student network model by using a pre-trained teacher network model and the student network model subjected to the first-order knowledge distillation to obtain a trained student network model; identification is carried out through the trained student network model, the identification preci