System and method for aircraft docking guidance and aircraft type identification

An aircraft docking guidance and type identification method, performed by an aircraft docking guidance and type identification system which comprises a machine vision subsystem, a laser scanning subsystem and a fusion module, wherein the method comprises:

• obtaining images, by the machine vision subsystem, through image capturing and obtaining a first position of a front wheel of an aircraft by calculation based on the images;
• obtaining a position of an aircraft nose of the aircraft, by the laser scanning subsystem, by means of laser scanning, and obtaining a second position of the front wheel of the aircraft by calculation;
• and
• performing fusion with respect to the first position and the second position of the front wheel of the aircraft according to a fusion rule to identify deviation of the front wheel of the aircraft
• wherein the fusion rule comprises:
• for a case where the front wheel of the aircraft deviates from a guidance line:
• determining whether a distance between x coordinates of the first position and the second position of the front wheel of the aircraft is smaller than or equal to a threshold;
• if the distance is smaller than or equal to the threshold, obtaining the deviation degree of the front wheel of the aircraft calculated by the machine vision subsystem;
• if the distance is greater than the threshold, performing smooth filtering on the first position and the second position of the front wheel of the aircraft to provide deviation information which indicates how the front wheel of the aircraft deviates from the guidance line;
• for a case where there is a distance remaining from the front wheel of the aircraft to a stopping line:
• determining whether there is an abnormal fluctuation in the second position of the front wheel of the aircraft;
• if there is not such abnormal fluctuation, obtaining the second position of the front wheel of the aircraft as the distance remaining from the front wheel of the aircraft to the stopping line;
• if there is such abnormal fluctuation, obtaining an average difference value of N previous difference values between positions of the front wheel of the aircraft obtained by the machine vision subsystem and the laser scanning subsystem, and calculating a total of a position of the front wheel of the aircraft obtained by the machine vision subsystem this time and the average difference value as the distance remaining from the front wheel of the aircraft to the stopping line.