Military communication via satellites has grown rapidly in the past 20 years. During this period, military systems have progressed through a family of increasingly more capable satellites and have arrived at a very mature state. The article begins with a historical overview of military communications by satellite and a detailed description of current systems. Next, the capabilities of present systems are reviewed in relation to user requirements and threats. The author contends that use of satellite communications by a large number of small-terminal users (e.g., aircraft, ships, submarines, and land mobiles) still requires major technological innovations to meet the need for a substantial increase in system capacity and performance improvement in a jamming environment. High-gain satellite antennas with many simultaneous spot beams and onboard signal processing are the two important areas of technology for alleviating the shortcomings of present systems. While it is possible to implement these features at ultrahigh frequencies and superhigh frequencies, the desire to support communications in a stressed environment strongly favors the use of even higher frequencies. The next-generation systems of the 1990s are reviewed with an emphasis on extremely high frequency systems and architectural trends for the post-2000 era. Alternative directions for future systems development, such as the use of highly proliferated satellite constellations, also are explored. (11 figures, 8 refs.).
Architectural Trends in Military Satellite Communications Systems
1990
14 pages
Report
Keine Angabe
Englisch
Military Sciences , Unmanned Spacecraft , Common Carrier & Satellite , Limitations , Military capabilities , Satellite communications , Architecture , Communication satellites , Military satellites , Signal processing , Reprints , Survivability , Broadband , History , User needs , Radio links , Radio transmission , Tactical communications , Extremely high frequency , Satellite antennas , Ultrahigh frequency , Secure communications , High gain , Superhigh frequency , Radio antijamming , Radio interception , Satellite constellations , Milsatcom(Military satellite communications systems) , Intelsat satellites , Dscs(Defense satellite communications system) , Spot beam antennas , Geostationary satellites , Nuclear survivability , Wideband community , Tactical mobile community , Fltsatcom(Fleet satellite communications system) , Leasat satellites , Afsatcom(Air force satellite communications system) , Intersatellite crosslinks , Milstar system
Trends in military satellite communications
Tema Archiv | 1990
|Military Satellite Communications Systems
NTIS | 1992
Military satellite communications systems
Tema Archiv | 1976
|Military satellite communications systems architecture
Tema Archiv | 1979
|