If you had
to consider some of the known systems, this particular slide shows only
two known systems, IRIDIUM which the satellites are esteemed there, but
not operational, for commercial purposes, globally start, we could see that
IRIDIUM has got 66 satellites and 6 are in a spare in 6 orbits at a height
of 780 kilometres and at an inclination of 86,4°, which basically means
that it is almost going over the North Pole. They have 21 ground stations
and the size consists of 48 cells per satellite and can provide voice data
and fax connectivity. The special feature for IRIDIUM system is that it
does have inter on board processing as well as inter-satellite link. Inter-satellite link means that one could go up from a ground station to the satellite, from that satellite to another satellite, and finally to the intended user. | ![]() |