1
Q
What is the principal direction of ECI?
A
Vernal Equinox
2
Q
What is the principal direction of ECEF?
A
0° latitude 0° longitude
3
Q
What is the principal direction of the Perifocal frame?
A
Eccentricity Vector
4
Q
What is the principal direction of RIC frame?
A
Radial
5
Q
Use: Show a satellite’s ground track
A
ECEF
6
Q
Use: Relative motion and maneuvers
A
RIC
7
Q
Use: A non-rotating view
A
ECI
8
Q
Use: A frame centered on the Focus of the orbit
A
Perifocal
