Page 81 - Satellite Communications, Fourth Edition
P. 81
Orbits and Launching Methods 61
2
[6390.121 (1 0.08182 ) 0.2] 0.74803
4748.151 km
At this point, both the satellite radius vector r and the earth station
radius vector R are known in the IJK frame for any position of satel-
lite and earth. From the vector diagram shown in Fig. 2.12a, the range
vector r is obtained as
r R (2.43)
Figure 2.12 Topocentric-horizon coordinate system (SEZ frame): (a)
overall view; (b) detailed view.
