Systems and methods for generating collision avoidance directives

A method of generating a collision avoidance directive comprising:

• receiving a location and a velocity of an intruder aircraft;
• determining a current lateral incursion of the intruder aircraft onto a runway based on the location of the intruder aircraft;
• defining an incursion line extending across the runway based on the location of the intruder aircraft;
• determining a time to collision, wherein an ego aircraft is expected to cross the incursion line on the runway at the time to collision;
• generating a predicted lateral incursion of the intruder aircraft onto the runway based on the time to collision, the current lateral incursion of the intruder aircraft, and the velocity of the intruder aircraft;
• determining whether a lateral margin between the ego aircraft and the intruder aircraft on the runway at the time to collision is greater than a lateral margin tolerance, the lateral margin being based at least in part on the predicted lateral incursion;
• and
• generating a first directive alert to proceed with the one of a take-off and a landing via the runway to be output to an output device of the ego aircraft based on the determination.

A non-transitory machine-readable storage medium that stores instructions executable by at least one processor, the instructions configurable to cause the at least one processor to perform operations comprising:

• receiving a location and a velocity of an intruder aircraft;
• determining a current lateral incursion of the intruder aircraft onto a runway based on the location of the intruder aircraft;
• defining an incursion line extending across the runway based on the location of the intruder aircraft;
• determining a time to collision, wherein an ego aircraft is expected to cross the incursion line on the runway at the time to collision;
• generating a predicted lateral incursion of the intruder aircraft onto the runway based on the time to collision, the current lateral incursion of the intruder aircraft, and the velocity of the intruder aircraft;
• determining whether a lateral margin between the ego aircraft and the intruder aircraft on the runway at the time to collision is greater than a lateral margin tolerance, the lateral margin being based at least in part on the predicted lateral incursion;
• and
• generating a first directive alert to proceed with the one of a take-off and a landing via the runway to be output to an output device of the ego aircraft based on the determination.