Flashcards in Instrument Navigation Deck (17):
What does GPS stand for?
Global Positioning System
How many satellites are required for accurate triangulation?
How many satellites are required for lateral reception?
What does RAIM stand for?
Receiver Autonomous Integrity Monitoring
What does RAIM do?
It verifies GPS signal strength for navigation. If RAIM finds that a satellite signal is unacceptable, a RAIM warning will appear, informing the pilot to use another means for navigation.
What does WAAS stand for?
Wide Area Augmentation System
What is WAAS designed for?
To improve the accuracy, integrity, and availability of the GPS signals.
Describe how WAAS works.
1. Wide Area Reference Station receives GPS signal.
2. Wide Area Reference Station data is then sent to a Wide Area Master Station for correction.
3. The Wide Area Master station then uplinks the corrected signal to GEO Synchronous Satellites.
4. The GEO Synchronous Satellites send the updated WAAS signal to the aircraft equipped with WAAS receivers.
What is a precision approach that incorporates WAAS?
What does RNAV stand for?
What does RNAV use?
It uses a flight computer, VOR's and DME.
What is RNAV equipment capable of?
It is capable of computing the aircraft position, actual track, groundspeed, and then presenting meaningful information to the pilot. This information may be in the form of distance, cross-track error, and time estimates relative to the selected track or WP.
What are the different classes of VOR's?
High Altitude, Low Altitude, and Terminal.
What is the service volume for a low altitude VOR?
Beings at 1,000’ and extends upwards to 18,000’ with a 40NM radius.
What is the service volume for a high altitude VOR?
1,000’ up to 14,500’ with 40NM radius.
14,500’ up to 18,000’ with a 100NM radius.
18,000’ up to 45,000’ with a radius of 130NM.
45,000’ up to 60,000’ with a radius of 100NM.
When enroute, the spacing of high altitude VOR's should be no more than how many NM?