Subscribe to our free daily newsletters
. Military Space News .

Subscribe to our free daily newsletters

Raytheon Demonstrates Satellite Communications Alternative

by Staff Writers
Marlborough MA (SPX) Feb 11, 2007
During an exercise with the I Marine Expeditionary Force at Camp Pendleton, Calif., Raytheon successfully demonstrated that a traditional, transportable satellite communications terminal could be field configured to communicate without acquiring a satellite connection.

This capability, known as Troposcatter, or TROPO, transmits radio waves over the curvature of the Earth without using satellites. The U.S. military currently employs these systems for tactical and strategic communications throughout the world.

"This demonstration showed that it is possible to provide a viable alternative to traditional satellite communications with a light-weight, low- power and rapidly deployable solution," said Jerry Powlen, vice president, Network Centric Systems' Integrated Communications Systems. "Enemy threats to satellite communications are real. We are offering a high-performance, cost- effective solution to counter these threats."

Colonel Kirk Bruno, information technology officer for the I Marine Expeditionary Force, said: "The ease of deployment and set up and the improved data rates with TROPO systems drastically reduce the support needed to carry out a mission. Increased data throughput without relying on already stressed satellites is critical, and unlike satellite communications, TROPO systems provide cost-free access."

Raytheon established the TROPO communications link between its Dual-Mode, All-Band Re-locatable Tactical Terminal, or DART-T, and a modified Joint Network Node satellite transportable terminal.

The demonstration showed that the widely fielded JNN terminal could be adapted to include a high-bandwidth troposcatter mode, which not only minimizes the current limitation of existing satellite bandwidth, but also provides continuous and reliable communications in areas of the world that do not have access to SATCOM.

Dual-Mode, All-Band Re-locatable Tactical Terminal (DART-T) is the industry's most advanced TROPO communications link, providing voice, video and data. It is a multipurpose, mobile platform that provides single antenna communications for both TROPO, SATCOM and line-of-sight communications.

Over a five-day period, during this demonstration, the vehicle-mounted DART-T terminal and its TROPO-modified JNN trailer, both single antenna systems, delivered continuous, error-free data operation over a 20Mbps troposcatter link.

JNN is a system that the U.S. military uses for remote, satellite-based communications.

Troposcatter operates by bouncing signals off irregularities (small changes in humidity, temperature and pressure) in the troposphere, approximately 6.2 miles (10 kilometers) above the Earth's surface.

Email This Article

Related Links
Read the latest in Military Space Communications Technology at

Interim Polar System Reaches Full Operational Capability
Los Angeles AFB CA (AFNS) Feb 11, 2007
Air Force officials announced Feb. 6 the successful launch and delivery for operational service of the second Interim Polar System payload. With this placement of the second of three planned IPS payloads, the extremely high frequency constellation is at full operational capability, providing 24-hour EHF communications coverage of the northern polar region.

  • Putin Stuns With Attack On US
  • US Does Not Want New Cold War
  • Gates And Ivanov Recall Old Times
  • US Military Must Stand Ready To Face Threats Says Gates

  • North Korea Nuclear Talks To Wrap Up Amid Energy Aid Row
  • Iranian Ready To Resume Talks But Set To Announce New Technologies
  • Top Cleric Says US Within Firing Range
  • White House Says No Plan To Invade; Iran Says Missile Tests No Threat To Gulf Fleet

  • India Test-Fires Supersonic Cruise Missile
  • Israeli Media Says Syria Has Tested Scud
  • Iran Seeking Longer-Range Strike Force
  • Russia To Help India Test Supersonic Cruise Missile

  • Russia Protests US Missile Shield But Vows To Avoid Arms Race
  • Congressional Research Service Skepticism On BMD Grows
  • Raytheon Completes Patriot Live-Fire Test With 3-for-3 Successes
  • Iran Threat Behind Polish Interest In Missile Defense

  • Anger As Britons Face Air Tax Hike
  • Bats In Flight Reveal Unexpected Aerodynamics
  • Lockheed Martin And Boeing Form Strategic Alliance To Promote Next-Gen Air Transportation System
  • Time to test the Guardian Missile Defense System For Commercial Aircraft

  • Iran Claims New Stealth Drone That Can Attack US Gulf Fleet
  • Boeing ScanEagle Team Achieves Compliance With NATO UAV Interoperability Standard
  • US Navy Buys Two Northrop Grumman Fire Scouts To Refine Concept Of Operations
  • USAF Sponsors Fully Automatic Take-Off And Landing Demonstrations Of Proxy Aviation's SkyWatcher UAV

  • The Murky World Of Contracting In Iraq
  • Fighting Three Wars At Once In Iraq
  • The Shiite Strategy In Iraq
  • Operation Alamo

  • India's Showcase Chopper Crashes Ahead Of Airshow
  • Language Learning Via Video Gaming
  • Future Combat Systems Completes Experiment and Soldier-testing Of Key Technologies
  • Jointness Key To Future Of Military Medicine

  • The content herein, unless otherwise known to be public domain, are Copyright 1995-2006 - SpaceDaily.AFP and UPI Wire Stories are copyright Agence France-Presse and United Press International. ESA PortalReports are copyright European Space Agency. All NASA sourced material is public domain. Additionalcopyrights may apply in whole or part to other bona fide parties. Advertising does not imply endorsement,agreement or approval of any opinions, statements or information provided by SpaceDaily on any Web page published or hosted by SpaceDaily. Privacy Statement