Page 113 - Satellite Communications, Fourth Edition
P. 113
The Geostationary Orbit 93
Figure 3.8 Showing satellite eclipse and satellite sun transit around
spring and autumn equinoxes.
has to operate on reduced battery power. Where the satellite longitude
is west of the earth station, eclipse does not occur until the earth station
is in darkness, (or early morning) when usage is likely to be low. Thus
satellite longitudes which are west, rather than east, of the earth sta-
tion are more desirable.
Figure 3.9 A satellite east of the earth station enters eclipse
during daylight and early evening (busy) hours at the earth
station. A satellite west of the earth station enters eclipse
during night and early morning (nonbusy) hours.
