The lighting guidance system provides effective protection for flights entering and exiting Beijing Daxing International Airport

Beijing Daxing International Airport has built and operates the country's first Level IV standard A-SMGCS advanced ground surveillance and guidance system. The grading concept of ASMGCS comes from ICAO 9380. The meaning of Level IV is to realize the monitoring function (Level I) and the alarm function (II Level) and taxi path planning function (Level III), a guidance function is added. The guidance method adopted by Daxing Airport is lighting guidance.

In order for the A-SMGCS system to realize the lighting guidance function, it must obtain the required lighting control authority from the lighting system. The lighting types on the Daxing Airport include runway center line lights, runway edge lights, taxiway center line lights, taxiway edge lights, stop row lights and parking bay introduction lights. Among them, the taxiway center line lights and stop lights are the control objects that need to be introduced during the lighting guidance process of the A-SMGCS system. The green light in the picture is the taxiway center line light, and the red light is the stop bar light.

Currently, Daxing Airport has a total of 17,994 taxiway single lights and 318 stop lights. The control of lighting elements during the lighting guidance process is a combination of multiple center line lights. The combination of these lights becomes the lighting guidance segment. The lighting system divides the taxiway center line lights on the scene into 2289 lighting guidance segments. The stop lights are also visible. For special lighting guidance segments. The light guidance section becomes the smallest controllable unit for guiding the aircraft to taxi.

When the A-SMGCS system obtains the lighting control authority and meets the following conditions, the system can provide lighting guidance for the flight:

1. The flight has a planned route;

2. For departing flights, the track is updated stably, the operating route coincides with the planned routing position, and the controlled guidance segment is opened;

3. For incoming flights, the controlled guidance lights will be turned on as soon as the target enters the rapid escape lane.

During the light guidance process, when the route and track of the flight exist and the position difference is within a certain distance, the taxiing centerline light (green) in front of the flight will automatically turn on one after another. Within the set guidance length, if there is no conflict , the stop bar lights (red) within the guidance length are turned off. The lights will automatically turn off when the flight completes a section, and turn on automatically when the flight stops. Similar to highway traffic lights, the red light is stop and the green light is go. The pilot only needs to follow the light guidance to control the flight to the corresponding parking space or runway take-off position.

Lighting guidance technology can concisely and clearly instruct pilots to taxi or stop, and can also achieve relief from aircraft taxiing conflicts and reduce the occurrence of runway incursions. In low visibility conditions, the use of lights to guide flight taxiing can also improve the efficiency of control and command, providing a strong guarantee for the safe operation of control.