23
190-00587-02 Rev. E
Garmin GTS Traffic Systems
6.4.2.1 Sensitivity Level
As with TAS/TCAS I TA implementations, height above ground is used to
adjust the sensitivity of the ADS-B In alerting algorithm. Radar Altitude (if
available), Calculated Height Above Ground, and ownship altitude are used
to adjust the sensitivity of the ADS-B In alerting algorithm in accordance with
Table 5:
Sensitivity
Level
Height
Above
Airport
(HAA) (feet)
Radar
Altitude
(feet)
Height Above
Terrain (HAT)
(if available)*
Ownship
Altitude
(feet)
4
≤
1,500 and w/in
5 NM of airport
reference point
Any
Any
Any
4
Unavailable
≤
1,500
Any
Any
4
Unavailable
Unavailable
≤
1,500
Any
5
Unavailable or
> 1,500
Unavailable or
> 1,500
Unavailable or
> 1,500
≤
5,000
6
Unavailable or
> 1,500
Unavailable or
> 1,500
Unavailable or
> 1,500
> 5,000 and
≤
10,000
7
Unavailable or
> 1,500
Unavailable or
> 1,500
Unavailable or
> 1,500
> 10,000 and
≤
20,000
8
Unavailable or
> 1,500
Unavailable or
> 1,500
Unavailable or
> 1,500
> 20,000
Table 5 Alerting Thresholds for ADS-B Traffic
Summary of Contents for GTS 820 TAS
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