every sixth orbit. Each ground station within this coverage region can receive beamed power between 3 and 6 times per day, although the contact time will vary significantly on each of these passes. Taking just one of the 6+ daily passes. Figure 4-7 illustrates the accessible swath width about the ground track for a beam steering angle of 30°; also shown is the reduced swath width for a mmimum beam elevation angle of 30°. It is seen that accessible site latitudes extend to beyond 60° (north or south) for the 30° inclination SunTower orbit Geometric parameters are plotted vs. time in Figure 4-8 for a MEO SunTower pass optimally aligned over a ground site at 13° N latitude. The lower graph shows the variation of beam slant range and elevation angle, while the upper graph describes beam slewing angle and longitude offset. Pass duration is 49.2 minutes with an elevation constraint E >30° (a < 26.5°). Slant range varies between 6,000 and 7,888 km over the pass; the maximum longitude offset is about 32°. Figure 4-8 MEO SunTower Overhead Pass at 13 deg N Latitude Site
RkJQdWJsaXNoZXIy MTU5NjU0Mg==