| 摘要 |
In an automatic air traffic management system aircraft fly in "tubes" each having a line 11 representing the normal assigned path of the aircraft, an inner boundary around a normal zone 13 representing acceptable deviations of the aircraft from the line 11, and an outer boundary around a warning zone 15. The system monitors the position of each aircraft and issues a warning to an air traffic controller if an aircraft leaves the normal zone 13 of its allotted tube, and a more urgent warning if it leaves the warning zone 15. This substantially relieves the air traffic controller of the need to monitor the aircraft to ensure that they remain within the tube, permitting the air traffic controller more time to devote to guiding aircraft into and out of tubes and through tube junctions, to maintaining correct spacing between aircraft along the tube, and to providing course correction instructions when aircraft arrive at bends in the tube. <IMAGE> |
