Tech

December 17, 2012

Deployable radio frequency data backbone to match fiber optic capacity


Fiber optic cables provide the core backbone for military and civilian networks, enabling Internet, phone, video and other data to move at super-high speeds with virtually no degradation over long distances.

In deployed environments, where a fiber optic backbone doesnít exist, other communications modes are used resulting in reduced data-rate capacity for the warfighter.

DARPAís 100 Gb/s RF Backbone (100G) intends to develop a fiber-optic-equivalent communications backbone that can be deployed worldwide. The goal is to create a 100 Gb/s data link that achieves a range greater than 200 kilometers between airborne assets and a range greater than 100 kilometers between an airborne asset (at 60,000 feet) and the ground. The 100G program goal is to meet the weight and power metrics of the Common Data Link (CDL) deployed by Forces today for high-capacity data streaming from platforms.

A major challenge to providing 100 Gb/s from an airborne asset to the ground is cloud cover. Free-space optical links wonít propagate through the cloud layer, which means RF is the only option. The system will be designed to provide all-weather capability enabling tactically relevant data throughput and link ranges through clouds, fog or rain. Technical advances in modulation of millimeter-wave frequencies open the door to achieving 100Gís goals.

ìProviding fiber-optic-equivalent capacity on a radio frequency carrier will require spectrally efficient use of available RF spectrum,î said Dick Ridgway, DARPA program manager. ì100G plans to demonstrate how high-order modulation and spatial multiplexing can be synergistically combined to achieve 100 Gigabits per second with the size, weight and power needed for a deployable system. We believe that to achieve the programís goals requires the convergence of telecommunications system providers and the defense communications tech base.

DARPA will host a proposersí day Jan. 9, 2013, in Arlington, Va. For details, visit: http://go.usa.gov/gVnB.




All of this week's top headlines to your email every Friday.


 
 

 

Headlines September 17, 2014

News: Pentagon open to U.S. ground troops in fight against Islamic State - The Pentagon’s top general opened the door Sept. 16 to the possibility that U.S. combat troops would be needed in Iraq, as he publicly laid out President Obama’s still-developing plans to combat Islamic State insurgents through U.S. air power and relying on an...
 
 

News Briefs September 17, 2014

U.S. to assign 3,000 troops to fight Ebola The Obama administration is preparing to assign 3,000 U.S. military personnel to West Africa to combat the Ebola outbreak that has overwhelmed local health care systems and drawn appeals for help from the region and aid organizations. The troops will supply medical and logistical support and boost...
 
 
Navy photograph

Future USNS Fall River delivered

Navy photograph The joint high speed vessel USNS Fall River (JHSV 4) completes acceptance trials testing and evaluations in the Gulf of Mexico. The ship’s trials included dockside testing to clear the ship for sea and at-...
 

 
University of Alaska-Fairbanks photograph by Chris Larsen

NASA airborne campaigns focus on climate impacts in Arctic

University of Alaska-Fairbanks photograph by Chris Larsen Changes in more than 130 Alaskan glaciers are being surveyed by scientists at the University of Alaska-Fairbanks in a DHC-3 Otter as part of NASA’s multi-year Oper...
 
 
Air Force photograph by Michael J. Pausic

Future of NATO: Adapting to a new security environment

Air Force photograph by Michael J. Pausic Gen. Phillip Breedlove informs the assembled crowd about the results of the recent NATO Summit and the areas of instability that affect Europe that have regional implications. Seated in...
 
 
Image courtesy of NASA/CXC/M. Weiss

NASA’s Chandra X-ray Observatory finds planet that makes star act deceptively old

Image courtesy of NASA/CXC/M. Weiss A new study from NASA’s Chandra X-ray Observatory shows that a giant exoplanet, WASP-18b, is making the star that it orbits very closely act much older than it actually is. This artist&...
 




0 Comments


Be the first to comment!


Leave a Reply

Your email address will not be published. Required fields are marked *

You may use these HTML tags and attributes: <a href="" title=""> <abbr title=""> <acronym title=""> <b> <blockquote cite=""> <cite> <code> <del datetime=""> <em> <i> <q cite=""> <strike> <strong>