Collision avoidance system for aircraft ground operations
First Claim
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1. A ground collision avoidance system (GCAS) for an aircraft, the system comprising:
- a radio frequency (RF) sensor for sensing a radar signal from an obstacle and a location of the obstacle with respect to the aircraft as the aircraft moves along the ground; and
a processor that, in operation;
identifies the obstacle using the radar signal and an obstacle shape template;
tracks the obstacle to determine a temporal persistence of the obstacle;
determines an expected location of the obstacle with respect to the aircraft from the sensed location and a trajectory of the object; and
generates an alarm signal when the expected location of the obstacle with respect to the object is less than a selected criterion.
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Abstract
A ground collision avoidance system (GCAS) for an aircraft is disclosed. A radio frequency (RF) sensor senses a location of an obstacle with respect to the aircraft moving along the ground. An expected location of the obstacle with respect to the aircraft is determined from the sensed location and a trajectory of the aircraft. An alarm signal is generated when the expected location of the obstacle is less than a selected criterion.
19 Citations
15 Claims
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1. A ground collision avoidance system (GCAS) for an aircraft, the system comprising:
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a radio frequency (RF) sensor for sensing a radar signal from an obstacle and a location of the obstacle with respect to the aircraft as the aircraft moves along the ground; and a processor that, in operation; identifies the obstacle using the radar signal and an obstacle shape template; tracks the obstacle to determine a temporal persistence of the obstacle; determines an expected location of the obstacle with respect to the aircraft from the sensed location and a trajectory of the object; and generates an alarm signal when the expected location of the obstacle with respect to the object is less than a selected criterion. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method of preventing a collision of an object, the system comprising:
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sensing, using a radio frequency (RF) sensor, a radar signal from an obstacle and a location of the obstacle with respect to an aircraft as the aircraft moves along the ground; identifies the obstacle using the radar signal and an obstacle shape template; tracking the obstacle to determine a temporal persistence of the obstacle; determining an expected location of the obstacle with respect to the aircraft from the sensed location and a trajectory of the aircraft, and generating an alarm signal when the expected location of the obstacle with respect to the aircraft is less than a selected criterion. - View Dependent Claims (10, 11, 12, 13, 14, 15)
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Specification