Lockheed Martin Corporation
Persistent LEO spacecraft communications

Abstract:

A system includes a Mobile User Objective System (MUOS) geostationary earth orbit (GEO)-based communication satellites (ComSat) to provide a persistent and on-demand communication links between multiple LEO space vehicles, their associated air and/or ground users and operations centers. The system further includes one or more LEO space vehicles that can communicate with the GEO-based MUOS ComSats using UHF communication links. Each of the LEO space vehicles includes radio circuitry to enable communicating over an ultra-high frequency (UHF) band used by the MUOS GEO communication link in compliance with the MUOS Wideband Code-Division Multiple-Access WCDMA waveform standard or other user defendable waveforms.