Moving vehicle distance measurement method

The invention relates to the technical field of visual identification distance measurement, in particular to a moving vehicle distance measurement method, which comprises the following steps that a laser radar is mounted above the moving direction of a vehicle, the laser radar emits a laser beam for scanning in real time, and the initial position of the scanned vehicle is used as a standard reference position; after the vehicle moves for a certain distance, the laser radar scans the outline of the vehicle at the current moment, and filtering processing is carried out on standard reference position outline data; the distance between the current position of the vehicle and the standard reference position is calculated, the distance between the current position of the vehicle and the standard reference position is predicted, whether the calculated distance and the predicted distance exceed a threshold value or not is judged, and the measurement result is selected based on the threshold value; and after the vehic