Common use of SPACE SEGMENT Clause in Contracts

SPACE SEGMENT. The IRIDIUM Space Segment is defined to be multiple units of a satellite design which will populate the IRIDIUM Constellation. Each Space Vehicle is a network node orbiting the earth in a circular polar orbit. Each SV is a three-axis stabilized satellite which integrates the structure and subsystems required to perform IRIDIUM space-based communications routing and control functions, maintain Space Vehicle operations and provide communications service for the ISUs. Each Space Vehicle includes a nadir pointing subscriber-link main mission antenna subsystem, feeder-link Gateway/SCS and crosslink antenna subsystems, a secondary, omni-directional, communications subsystem and associated communications electronics. The main mission antenna (MMA) communicates directly with the ISUs. The Gateway/SCS and crosslink antennas of each Space Vehicle provide the capability to communicate with Gateway/SCS facilities within its field of view and neighboring Space Vehicles, respectively.