Patent ID: 8380424
Filing Date: 2013-02-19
Classification: G01C,G08G

Abstract:
1. A method for aircraft guidance, comprising: determining a first flight trajectory for a first aircraft; determining a second flight trajectory for a second aircraft; predicting a distance between the first aircraft and the second aircraft at a closest point of approach (CPA) based on the first and second flight trajectories; establishing a three-dimensional separation perimeter layer that provides at least one minimum separation distance from the first aircraft to the second aircraft, each dimension in the three-dimensional separation perimeter layer corresponding to a respective control direction having an avoidance gain; comparing the distance to the three-dimensional separation perimeter layer; and altering the first flight trajectory based at least on an avoidance control command having a magnitude that includes gain contribution from the avoidance gain of each dimension when the predicted distance breaches the three-dimensional separation perimeter layer.