Text: Satellite Communications
Q4
a) Explain in detail the geocentric-equatorial coordinate system, which is based on the Earth's equatorial plane.
b) For satellite no. 14452, the NASA prediction bulletin for a certain epoch states that the true anomaly and the magnitude of the radius vector 5 seconds after the epoch are 210° and 7500 km. Given that Ω = 300°, ω = 60°, and i = 65°, express the radius vector r in vector form in the perifocal coordinate system. Calculate also the position vector in the IJK frame and its magnitude.