Terrain Awareness; Terrain Awareness; Terrain Configurations; Gps Altitude For Terrain - Garmin GPS 175 Pilot's Manual

Terrain Awareness

WARNING
DO NOT USE TERRAIN AND OBSTACLE DATA TO NAVIGATE OR
MANEUVER AROUND TERRAIN. THEY ARE AN AID TO SITUATIONAL
AWARENESS ONLY.
Terrain controls are accessible from the Terrain menu. Map overlay keys are accessible
from the associated map menu.

5.13 Terrain Configurations

AVAILABLE TERRAIN
CONFIGURATIONS
• Terrain Proximity
Terrain Alerting
•
5.13.1

GPS Altitude for Terrain

FUNCTIONAL REQUIREMENTS
GPS altitude is derived from satellite measurements. To acquire an accurate 3-D fix
(latitude, longitude, altitude), a minimum of four operating satellites must be in view
of the GPS receiver antenna.
The terrain system uses GPS altitude and position data to:
Create a 2-D image of surrounding terrain and obstacles relative to the
•
aircraft's position and altitude
Calculate the aircraft's flight path in relation to surrounding terrain and
•
obstacles
Predict hazardous terrain conditions and issue alerts
•
190-02207-02 Rev. 1 GPS 175/GNX 375 Pilot's Guide
Alerting functions are dependent
upon the configured terrain alerting
options.
Hazard Awareness
5-27