GPS Flashcards
1
Q
3 Components of GPS?
A
- Space: Satellites (24 total) (6 orbital phases)
- Control: Ground stations, master control station, monitoring stations
- User: G1000, iPhone
2
Q
How does GPS work
A
Pseudoranging:
Distance and Time (Beam sends out to the plane, then back to us) (THINK DME) (1-2 satellites)
Trilateration:
-3 or more satellites give us a 2D position of where we are
-4 or more satellites give us 3D position of where we are (altitude)
3
Q
What is RAIM & Main Functions??
A
Receiver Autonomous Integrity Monitoring
2 Main Functions
1Baroult Detection (5 sattelites) (4 sats)
2. Fault Detection & Exclusion (6 sattelites) (5 sats)
*Baro aiding capability, brings these satellite requirements down one (us)
4
Q
A