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190-00587-02 Rev. E
Garmin GTS Traffic Systems
6.4.1.2 TA Criteria
Targets may become a TA based on closure rate (time until collision) or if they
encroach within a minimum distance. The criteria used depend on the current
sensitivity level and whether the target has altitude reporting capability. Once a
TA is generated, it will remain a TA for at least 8 seconds, even if the target no
longer satisfies the criteria for a TA. Table 4 summarizes the criteria used for TAs.
Sensitivity
Level
Intruder Altitude
Available
TA Alerting Conditions
A
Yes
Intruder closing rate provides less than 20
seconds of vertical and horizontal separation.
Or:
Intruder closing rate provides less than 20
seconds of horizontal separation and vertical
separation is within 600 feet.
Or:
Intruder range is within 0.2 NM and vertical
separation is within 600 feet.
A
No
Intruder closing rate provides less than 15
seconds of separation or intruder range is
within 0.2 NM.
B
Yes
Intruder closing rate provides less than 30
seconds of vertical and horizontal separation.
Or:
Intruder closing rate provides less than 30
seconds of horizontal separation and vertical
separation is within 800 feet.
Or:
Intruder range is within 0.55 NM and vertical
separation is within 800 feet.
B
No
Intruder closing rate provides less than 20
seconds of separation or intruder range is
within 0.55 NM.
Table 4 TA Alerting Criteria
Содержание GTS 820 TAS
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