Posture change measuring device and posture change measuring method for ultrahigh-speed flight models

The invention relates to a posture change measuring device and a posture change measuring method for ultrahigh-speed flight models. The posture change measuring method includes the steps of shooting binocular front light images with coding gauge points of the models by a binocular camera in the ultrahigh-speed flight process of the models, adopting single exposure of the binocular camera and multiple-flash imaging of light sources during shooting, solving the postures of the models at the flashing moments of the light sources by extracting the coding gauge points of multiple model positions inthe binocular front light images at a single moment and according to imaging parameters of the binocular camera and the position relationships among the coding gauge points, and acquiring the posturechange conditions of the models along the time according to a light-emitting time sequence of a sequence light source model. The posture change measuring device and the posture change measuring method for the ultrahigh-speed