Airborne alerting system
First Claim
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1. A method for collision avoidance alerting performed by an own aircraft, the method comprising:
- a. a step for receiving data for a first Airborne Information for Lateral Spacing (AILS) separation assurance algorithm performed by the own aircraft;
b. a step for forming a track in accordance with received data for each of a plurality of aircraft, each track comprising first indicia of state and second indicia of whether current surveillance by the respective aircraft comprises a second AILS separation assurance algorithm performed by the respective aircraft;
c. while the own aircraft is performing the first AILS separation assurance algorithm;
(1) a step for providing alerting in accordance with the respective state and the first AILS separation assurance algorithm for each track of a first type, wherein criteria defining the first type includes;
(a) the respective second indicia is true; and
(b) an age of the received data for the respective track is less than a limit; and
(2) a step for providing alerting in accordance with the respective state and a Traffic Alert and Collision Avoidance System (TCAS) alerting algorithm for each track not of the first type; and
d. while the own aircraft is not performing the first AILS separation assurance algorithm, a step for providing alerting in accordance with the respective state and the TCAS alerting algorithm for each track of the plurality of aircraft.
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Abstract
Systems, methods and protocol for assuring separation of aircraft during parallel approaches. The systems, methods and protocol function in cooperation with existing TCAS to facilitate approaches of multiple aircraft on closely-spaced parallel runways. The systems, methods and protocol utilize data transmissions from equipped aircraft to obtain tracking information which is used in separation algorithms to generate alerts to an observer of possible threats. The systems, methods and protocol facilitate parallel approaches to closely-spaced parallel runways under Instrument Approach Procedure.
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Citations
12 Claims
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1. A method for collision avoidance alerting performed by an own aircraft, the method comprising:
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a. a step for receiving data for a first Airborne Information for Lateral Spacing (AILS) separation assurance algorithm performed by the own aircraft;
b. a step for forming a track in accordance with received data for each of a plurality of aircraft, each track comprising first indicia of state and second indicia of whether current surveillance by the respective aircraft comprises a second AILS separation assurance algorithm performed by the respective aircraft;
c. while the own aircraft is performing the first AILS separation assurance algorithm;
(1) a step for providing alerting in accordance with the respective state and the first AILS separation assurance algorithm for each track of a first type, wherein criteria defining the first type includes;
(a) the respective second indicia is true; and
(b) an age of the received data for the respective track is less than a limit; and
(2) a step for providing alerting in accordance with the respective state and a Traffic Alert and Collision Avoidance System (TCAS) alerting algorithm for each track not of the first type; and
d. while the own aircraft is not performing the first AILS separation assurance algorithm, a step for providing alerting in accordance with the respective state and the TCAS alerting algorithm for each track of the plurality of aircraft. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A system for collision avoidance alerting, the system installed in an own aircraft, the system comprising:
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a. means for receiving data for a first Airborne Information for Lateral Spacing (AILS) separation assurance algorithm performed by the own aircraft;
b. means for forming a track in accordance with received data for each of a plurality of aircraft, each track comprising first indicia of state and second indicia of whether current surveillance by the respective aircraft comprises a second AILS separation assurance algorithm performed by the respective aircraft;
c. means operative while the own aircraft is performing the first AILS separation assurance algorithm;
(1) for providing alerting in accordance with the respective state and the first AILS separation assurance algorithm for each track of a first type, wherein criteria defining the first type includes;
(a) the respective second indicia is true; and
(b) an age of the received data for the respective track is less than a limit; and
(2) for providing alerting in accordance with the respective state and a Traffic Alert and Collision Avoidance System (TCAS) alerting algorithm for each track not of the first type; and
d. means operative while the own aircraft is not performing the first AILS separation assurance algorithm, for providing alerting in accordance with the respective state and the TCAS alerting algorithm for each track of the plurality of aircraft. - View Dependent Claims (8, 9, 10, 11, 12)
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Specification