Visual Docking Guidance System, VDGS, is a system compiled of different electronics which are used to help pilots dock their aircraft correctly. Correct docking is very important because it accurately aligns the aero-bridge with the aeroplane’s door.
It is also important for an aeroplane to be properly aligned when refuelling or for general maintenance of an aircraft. Therefore, in short, a VDGS is used as a digital aid to help the pilots accurately dock their planes for different purposes.
VDGS have laser scanning devices which are used to identify different types of aircrafts which then directs the aircrafts to the appropriate docking points. These lasers are safe and are not harmful to the human eye; they are called eye-safe lasers.
When an aircraft needs to dock, the data of the aircraft, collected by lasers, is transferred to the appropriate VDGS units, thus enabling the VDGS to obtain all the necessary parameters of an aircraft using the database. When an air craft is detected by a laser all the parameters will be checked using the data it has obtained.
The VDGS will continue guiding the aircraft along a line drawn on the ground, and if the aircraft deviates the LED display will indicate left and right arrows and even speed requirements to redirect the aircraft pilot to the correct path.
VDGS have LED displays and guide aircrafts to different, appropriate, docking stations. These LED displays use amber coloured LEDs because they are the most clearly visible colour in all circumstances, whether it be rainy, snowy, foggy or even extremely sunny. This makes it easy for pilots to be aware of all docking stations and even the aircraft’s surroundings.
Therefore it is safe to say that VDGS are a very vital aspect in the safety and efficiency of docking aircrafts, boarding passengers and even refuelling the aircraft.