Midair collision avoidance system

• US 6,531,978 B2
• Filed: 08/20/2001
• Issued: 03/11/2003
• Est. Priority Date: 04/08/1999
• Status: Expired due to Term

• Current Assignee: L-3 Communications Corporation (L3Harris Technologies, Inc.)
• Original Assignee: L-3 Communications Corporation (L3Harris Technologies, Inc.)
• Inventors: Tran, My
• Primary Examiner(s): Sotomayor, John B.
• Application Number:
  US09/933,273
• Publication Number:
  US 20020080059A1
• Time in Patent Office: 568 Days
• Field of Search: 342/29, 342/30, 342/31, 342/36, 342/37, 342/42, 342/43, 342/44, 342/110, 342/160, 342/176, 342/181, 342/182, 342/456, 342/46, 342/49, 701/121, 701/123, 701/204, 701/213, 701/219, 701/220, 701/300
• US Class Current: 342/29
• CPC Class Codes: G01S 13/933 of aircraft or spacecraft
• CPC Class Codes: G08G 5/0008 with other aircraft
• CPC Class Codes: G08G 5/0052 for cruising combined instruments indicating more than one navigational value G01C23/00
• CPC Class Codes: G08G 5/0078 for monitoring traffic from the aircraft radar or analogous systems specially adapted for traffic control G01S13/91
• CPC Class Codes: G08G 5/045 Navigation or guidance aids, e.g. determination of anti-collision manoeuvers radar or analogous systems specially adapted for anti-collision between aircraft G01S13/933

Abstract

A midair collision avoidance system (MCAS) employs an existing design of Traffic Alert and Collision Avoidance System (TCAS) as a module and seamlessly integrates it with a customized tactical module which is capable of providing unique tactical avoidance guidance control and display. The tactical module handles all phases of a tactical mission, including formation flight (e.g., formation fall-in, arming formation flight, engaging formation flight following, and formation break-away), and an air-refueling sequence (e.g., rendezvous, linkup, re-fueling, and disengaging air-refueling). The tactical module divides the air space around the aircraft into advisory, caution, and warning zones and for each provides display, tone and voice alerts to facilitate pop-up avoidance guidance commands. Military aircraft can thus effectively avoid mid air and near mid air collision situations in all three different operation modes: air traffic control (ATC) management mode, tactical mode, and a mixed mode.

Claims

1. A method for avoiding collisions when operating an aircraft comprising:

operating in a first mode when in an air traffic control environment;

operating in a second mode when in a tactical environment; and

operating in a third mode when in a mixed air traffic control/tactical mode.

2. A midair collision avoidance system for use in an aircraft, the system comprising:

an air traffic management module that tracks objects when the system is operating in an air traffic control mode;

a tactical based management module that tracks objects when the system operating in a tactical control mode; and

wherein the air traffic management module and the tactical based management module both track objects when operating in a mixed air traffic control/tactical mode.

3. The system of claim 2, further comprising an internal communication link coupling the air traffic management module and the tactical based management module, the internal communication link passing data between the the air traffic management module and the tactical based management module.

4. The system of claim 3, wherein the air traffic management module includes a first data bus, the tactical management module includes a second data bus, the first data bus coupled to the second data bus by the internal communication link.

5. A system for operating an aircraft in the vicinity of other objects, the system comprising:

a midair collision avoidance system that tracks a first object external to the aircraft in an air traffic control environment and a second object external to the aircraft in a tactical control environment; and

a transponder coupled to the midair collision avoidance system, the transponder receiving information regarding the first and second objects external to the aircraft and supplying the information to the midair collision avoidance system.

6. A midair collision avoidance system for use in an aircraft, the system comprising:

an air traffic management module that monitors and tracks objects in an air traffic control environment; and

a tactical based management module, in communication with the air traffic management module, that monitors and tracks objects in a tactical environment.

7. A midair collision avoidance system for use in an aircraft, the system comprising:

an air traffic management means for tracking objects when the system is operating in an air traffic control mode;

a tactical based management means for tracking objects when the system operating in a tactical control mode; and

wherein the air traffic management means and the tactical based management means both track objects when operating in a mixed air traffic control/tactical mode.

8. The system of claim 7, further comprising an internal communication means coupling the air traffic management module and the tactical based management module, the internal communication means for passing data between the the air traffic management module and the tactical based management module.

9. The system of claim 8, wherein the air traffic management means includes a first data bus, the tactical management means includes a second data bus, the first data bus coupled to the second data bus by the internal communication means.

10. A system for operating an aircraft in the vicinity of other objects, the system comprising:

a midair collision avoidance means for tracking a first object external to the aircraft in an air traffic control environment and a second object external to the aircraft in a tactical control environment; and

a transponder means coupled to the midair collision avoidance system, the transponder means for receiving information regarding the first and second objects external to the aircraft and for supplying the information to the midair collision avoidance system.

11. A midair collision avoidance system for use in an aircraft, the system comprising:

an air traffic management means for monitoring and tracking objects in an air traffic control environment; and

a tactical based management means, in communication with the air traffic management module, for monitoring and tracking objects in a tactical environment.