The Affordable Tactical Low Altitude Satellite Technology (ATLAST) program focuses on developing an architecture for a system providing tactical and beyond line-of-sight communications employing a constellation of satellites in Low Earth Orbit (LEO). A LEO based approach may result in a cost effective system providing voice and data communications between small, low-power, mobile terminals and hub stations. A constellation of small, inexpensive, lightweight satellites can be launched into LEO at a cost lower than that for higher orbits. Also, using LEO assets requires much less power to close the link. This report presents the approach to designing such a system and summarizes the design. The initial communications requirements are presented, and the impact discussed. Trade-off involving geometries for tactical links are presented. The baseline strawman design is given, including communications link budgets.
Affordable Tactical Low Altitude Satellite Technology Task
1990
36 pages
Report
No indication
English
Astronautics , Artificial satellites , Budgets , Communication and radio systems , Communications networks , Cost effectiveness , Costs , Data transmission systems , Earth orbits , Hubs , Lightweight , Line of sight , Low orbit trajectories , Mobile , Orbits , Requirements , Stations , Terminals , Spacecraft communication , Satellite clusters , Systems engineering , ATLAST program , Design
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