Folie 7 von 11
Notizen:
satellite passes observer at 90deg. elevation
min. elevation: 20deg. ==> 12 min. visibility
delay in between 4.5 ms and 9 ms
plotted: slant range / speed of light
affects strongly end-to-end delay for long distance calls
not apliable for “single-hop-scenarios”
walker orbit: 12 planes, 6 satellites per plane
in between 11.5 ms and 15 ms
==> change of 4.5 ms in 40 minutes
==> 1/4 of uplink-delay variation
