Devices and methods for filtering terrain and obstacle anti-collision alerts for aircraft
First Claim
1. A method of filtering anti-collision alerts for an aircraft, the aircraft having a terrain anti-collision equipment configured to transmit alerts to an alarm manager of the aircraft through an alert filter, the alerts each possessing a coding corresponding to one of at least three danger levels including:
- a first level corresponding to a low risk of dangerousness indicating a presence, in proximity to the aircraft, of obstacles not constituting an immediate danger;
a second level corresponding to a more significant dangerousness level advising gaining altitude for the aircraft within a given time span; and
a third level corresponding to a high risk of dangerousness advising undertaking an action other than the action corresponding to the second level, the method comprising;
evaluating a situation of the aircraft;
determining if a corridor defined along a predefined ideal trajectory is crossed by the aircraft according to the result of the evaluation;
after it is determined that the corridor is not crossed, selectively filtering out alerts of the first level and the second level by the alert filter according to multiple criteria transmitted by various systems for navigation, guidance, or positioning of the aircraft and allowing transmission of alerts of the third level and unfiltered alerts of the first level and the second level to the alarm manager of the aircraft; and
after it is determined that the corridor is crossed, disabling the filtering and allowing transmission of all alerts to the alarm manager of the aircraft.
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Accused Products
Abstract
The present invention relates to a device and methods for filtering anti-collision alerts for aircraft having a locating system charting the position of the aircraft and estimating the precision of its position. A navigation system of the aircraft calculates at least the actual speed of the aircraft, the speed instruction and a first deviation between the instruction and the actual speed, and the deviation being compared with a first reference overshoot threshold. An anti-collision system generates alerts. An alarms manager of the aircraft centralizes the alerts transmitted by the terrain anti-collision equipment of the aircraft to the crew. The alerts each posses a coding of the danger level, and the danger levels form part of a first predetermined set. The alert filter according to the invention filters sets of alerts according to the coding of their danger level.
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Citations
13 Claims
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1. A method of filtering anti-collision alerts for an aircraft, the aircraft having a terrain anti-collision equipment configured to transmit alerts to an alarm manager of the aircraft through an alert filter, the alerts each possessing a coding corresponding to one of at least three danger levels including:
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a first level corresponding to a low risk of dangerousness indicating a presence, in proximity to the aircraft, of obstacles not constituting an immediate danger; a second level corresponding to a more significant dangerousness level advising gaining altitude for the aircraft within a given time span; and a third level corresponding to a high risk of dangerousness advising undertaking an action other than the action corresponding to the second level, the method comprising; evaluating a situation of the aircraft; determining if a corridor defined along a predefined ideal trajectory is crossed by the aircraft according to the result of the evaluation; after it is determined that the corridor is not crossed, selectively filtering out alerts of the first level and the second level by the alert filter according to multiple criteria transmitted by various systems for navigation, guidance, or positioning of the aircraft and allowing transmission of alerts of the third level and unfiltered alerts of the first level and the second level to the alarm manager of the aircraft; and after it is determined that the corridor is crossed, disabling the filtering and allowing transmission of all alerts to the alarm manager of the aircraft. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. An anti-collision alerting system for an aircraft comprising:
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a locating system charting a position of the aircraft at each instant and estimating the precision of the position; a navigation system of the aircraft calculating at least an actual speed of the aircraft and speed instruction; an anti-collision system generating alerts, said alerts each possessing a coding corresponding to at least one of three danger levels including; a first level corresponding to a low risk of dangerousness indicating a presence, in proximity to the aircraft, of obstacles not constituting an immediate danger; a second level corresponding to a more significant dangerousness level advising gaining altitude for the aircraft within a given time span; and a third level corresponding to a high risk of dangerousness advising undertaking an action other than the action corresponding to the second level; an alert filter configured to; after it is determined, according to a deviation of the position or the speed of the aircraft, that the aircraft does not cross a corridor defined along a predetermined ideal trajectory, selectively filter out alerts of the first level and the second level according to multiple criteria transmitted by various systems for navigation, guidance, or positioning of the aircraft and allow transmission of alerts of the third level and unfiltered alerts of the first level and the second level to an alarm manager of the aircraft; and after it is determined that the corridor is crossed, disable the filtering and allow transmission of all alerts to the alarm manager; and the alarm manager of the aircraft centralizing the unfiltered alerts transmitted by the terrain anti-collision equipment of the aircraft through the alert filter. - View Dependent Claims (11, 12, 13)
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Specification