Space Segment

Ellipso^TM planned to use relatively low-cost satellites, putting our network intelligence on the ground where it is less expensive and easier to upgrade. The satellites connect Ellipso users (through their terminal unit) to an Ellipso ground control station (gateway), which connects into the existing national telecommunications or other networks. Most electronic processing functions take place in the Ellipso system earth stations. This reduces satellite size, weight, and cost (satellite-based processing is much more expensive than equivalent ground-based processing) and permits greater processing flexibility. The Ellipso satellite is a 3-axis stabilized design based on the existing Boeing GPS satellites.

Ellipso satellites may be launched up to five at a time while building the constellation, depending on the booster used. Seven Concordia satellites can provide complete and continuous coverage of the equatorial region and southern latitudes. Ten Borealis satellites in two inclined planes add capacity and initiate full global service. Either constellation may be replenished with additional satellites, as necessary. As a consequence of Ellipso's unique orbital design, fully capable 24-hour service can begin independently for either the Borealis or Concordia service areas. No other global mobile satellite system can do this.