Lecture 6 Flashcards
1
Q
global positioning system (GPS)
A
satellites to define geog positions on and above the surface of the earth
2
Q
3 segments of GPS
A
- space segment (satellite)
- control segment ( base stn_
- user segment (GPS receivers - eg. ur phone)
3
Q
gps is a direct measurement of
A
time it takes for a signal to travel from the satellite to the gps receiver
4
Q
gps receiver error (3)
A
- selective avail (security)
- multipath errors
- dilution of precision (cluster)
