GPS

Question 1

How does RAIM work?

Answer 1

RAIM uses redundant signals to produce several GPS position fixes and compare them using its unique algorithms. The statistical function determines whether or not a fault can be associated with any of the signals.

Question 2

How many satellites are required for RAIM fault detection?

Answer 2

5

Question 3

How many active satellites are there in the constellation?

Answer 3

24

Question 4

What is WAAS?

Answer 4

Wide Area Augmentation System

Question 5

How many satellites are required for RAIM fault detection WITH exclusion?

Answer 5

6

Question 6

What is the difference between SBAS and WAAS?

Answer 6

The Wide Area Augmentation System (WAAS), is the U.S. implementation of SBAS.

Question 7

What does SBAS stand for?

Answer 7

Satellite Based Augmentation System

Question 8

What is SBAS?

Answer 8

SBAS combines core constellation satellites with Geo-stationary satellites and ground based reference stations to monitor satellite ranging errors.