Display aid for air traffic controllers

The locations of aircraft on a first approach to a first runway are displayed on a line substantially parallel to a second approach to a second runway, the second runway converging with the first runway. The distances of aircraft on the first approach from a threshold of landing for the first runway are computed. These distances are used to draw a symbol of aircraft on the first approach onto the line parallel to the second approach at the distances from a threshold of landing for the second runway. The "mirror image" of aircraft displayed on the line parallel to the second approach will aid air traffic controllers in staggering aircraft approaching an airport on converging runways.

Patent #: 4890232 Issue Date: December 26, 1989