Global navigation satellite systems Flashcards
1
Q
What are the GNSS basics?
A
Three segments
- Space
- control
- users
Output
- Accurate position
- Accurate and common time
2
Q
GNSS limitations?
A
Sensitive to jamming
Spoofing
Multipath
It runs on batteries
3
Q
What is the GNSS positioning principle?
A
A position is determined through calculations of the distance to at least three known points
This requires that :
- A knows when the transmission started
- Ps position is known
- A can identify which P transmitted the signal
