Full-field deformation and vibration measurement method and system based on FMCW laser radar

The invention discloses a full-field deformation and vibration measurement method and system based on an FMCW laser radar, and the method comprises the steps: transmitting a linear frequency modulated laser radar signal through cyclic scanning, carrying out the coherent processing of a local oscillation laser signal and an echo laser signal, and obtaining a laser coherent signal; extracting the frequency of a laser coherent signal of an effective measuring point from each measuring point in the whole field, and calculating the distance from each measuring point on the surface of the measured object to the signal emission source, so as to position the measured object and obtain the point cloud of the measured object; phase information of each point, namely the measuring point, in the point cloud in each cyclic traversal scanning period is extracted from the frequency of the laser coherent signal of each measuring point through nonlinear phase demodulation, and deformation and vibration displacement information