Free Newsletters - Space News - Defense Alert - Environment Report - Energy Monitor
. Military Space News .




UAV NEWS
Remote Troops Closer to Having High-Speed Wireless Networks Mounted on UAVs
by Staff Writers
Washington DC (SPX) Apr 08, 2014


File image.

Missions in remote, forward operating locations often suffer from a lack of connectivity to tactical operation centers and access to valuable intelligence, surveillance, and reconnaissance (ISR) data. The assets needed for long-range, high-bandwidth communications capabilities are often unavailable to lower echelons due to theater-wide mission priorities.

DARPA's Mobile Hotspots program aims to help overcome this challenge by developing a reliable, on-demand capability for establishing long-range, high-capacity reachback that is organic to tactical units.

The program is building and demonstrating a scalable, mobile millimeter-wave communications backhaul network mounted on small unmanned aerial vehicles (UAVs) and providing a 1 Gb/s capacity. DARPA performers recently completed the first of three phases in which they developed and tested key technologies to be integrated into a complete system and flight tested in subsequent phases.

"We're pleased with the technical achievements we've seen so far in steerable millimeter-wave antennas and millimeter-wave amplifier technology," said Dick Ridgway, DARPA program manager. "These successes-and the novel networking approaches needed to maintain these high-capacity links-are key to providing forward deployed units with the same high-capacity connectivity we all enjoy over our 4G cell-phone networks."

Phase 1 accomplishments include:

+ Smaller, steerable millimeter-wave antennas: During field testing, the program successfully demonstrated steerable, compact millimeter-wave antennas that rapidly acquire, track, and establish a communications link between moving platforms. Steerable millimeter-wave antennas will enable the formation of a high-capacity backhaul network between aerial and ground platforms.

+ Low-noise amplifiers: Performers also demonstrated an advanced low-noise amplifier (LNA), which boosts the desired communications signal while minimizing unwanted noise. The prototype achieved the record for the world's lowest noise millimeter-wave LNA at about half the noise figure of a typical LNA.

+ More efficient and capable power amplifiers: Efficient millimeter-wave amplification is required to achieve the long ranges (> 50 km) desired in the Mobile Hotspots program. During Phase 1, performers demonstrated output power exceeding 1 watt and 20% power added efficiency (PAE) from a single gallium nitride (GaN) chip operating at E-Band frequencies (71 GHz to 86 GHz). Output powers exceeding 20 watts and approaching 20% PAE were also achieved using power-combining techniques.

+ New approaches for robust airborne networking: Mobile ad-hoc networking approaches were developed to maintain the high-capacity backhaul network among mobile air and ground platforms. Phase 1 performers developed unique solutions to overcome connectivity and network topology challenges associated with mobility and signal blockages due to terrain and platform shadowing.

+ Low-Size, Weight, and Power (SWAP) pod design to carry it all: Performers created engineering designs for small, lightweight pods to be mounted on an RQ-7 Shadow UAV. The pods, with all of the Mobile Hotspots components inside, are designed to meet the challenging program goals of widths no more than 8 inches, weight less than 20 pounds, and power consumption less than 150 watts.

Phase 2 of the program began March 2014. Two performers, L-3 Communications and FIRST RF, were chosen to lead teams comprising several Phase 1 performers. Phase 2 goals include the integration of the selected Phase 1 technologies into Shadow-compatible aerial pods and ground vehicles.

Phase 2 will conclude with a ground demonstration of at least four Shadow-compatible pods, two ground vehicles and a fixed ground node. A planned third phase will encompass field testing of the Mobile Hotspot systems on networks of multiple SRQ-7 Shadow UAVs and mobile ground vehicles.

.


Related Links
Mobile Hotspots
UAV News - Suppliers and Technology






Comment on this article via your Facebook, Yahoo, AOL, Hotmail login.

Share this article via these popular social media networks
del.icio.usdel.icio.us DiggDigg RedditReddit GoogleGoogle




Memory Foam Mattress Review
Newsletters :: SpaceDaily :: SpaceWar :: TerraDaily :: Energy Daily
XML Feeds :: Space News :: Earth News :: War News :: Solar Energy News





UAV NEWS
Pentagon to organize drones in teams for sharing data, fighting together
Moscow (Voice of Russia) Apr 01, 2014
The Pentagon's research unit is ready to launch a program that unites drones into teams allowing them to share data and act together on a battlefield while being operated by one human. The Defense Advanced Research Projects Agency (DARPA) recently announced that the Proposers' Day for its Collaborative Operations in Denied Environments (CODE) program will be held on April 11. CODE's goal is to u ... read more


UAV NEWS
Japan orders to shoot down any new N Korea ballistic missile launches

US to send two more missile defence ships to Japan: Hagel

Russia's new S-500 system to destroy any target at any altitude

Britain, France give MBDA missile development contract

UAV NEWS
US, UK parts in North Korea rocket

Britain, France sign anti-ship missile deal

Approval given for Griffin missile launch system

Lockheed Martin's DAGR Missile Scores a Perfect 16 of 16 in Flight Tests for US Army

UAV NEWS
Pentagon to organize drones in teams for sharing data, fighting together

'StratoBus' drone-satellite hybrid to provide new level of surveillance

Northrop Grumman, US Navy Complete Initial Flight Testing of the Triton Unmanned Aircraft System

UAVs Reach New Heights With Warsaw Polytechnic and LockMart Partnership

UAV NEWS
Spectrum Challenge Paves Way For More Reliable Radio Communications

Northrop Grumman Flies First Production Smart Node Pod

Testing Begins on Third AEHF Satellite

Harris gets $131 million in orders from unidentifed customers

UAV NEWS
Ukrainian industry ready to supply military with armored vehicles

Norway orders military trucks

Eaton intros power micro-grid system for forward-deployed troops

Rockwell Collins, Avionics Services in manufacturing deal

UAV NEWS
Volvo suspends Russia tank project over Ukraine 'uncertainty'

Eighteen countries ratify UN treaty on arms trade

French-Russian tank project on hold due to Ukraine crisis

Japan lifts own blanket arms export ban

UAV NEWS
Australia defends security deal with Japan

Russian marine kills Ukrainian officer: Kiev

US sends warship to Black Sea amid Ukraine crisis

China warns US against 'interference' in Hong Kong: Xinhua

UAV NEWS
Fabricating Nanostructures with Silk Could Make Clean Rooms Green Rooms

Scientists watch nanoparticles grow

Nanotube coating helps shrink mass spectrometers

Researchers Grow Carbon Nanofibers Using Ambient Air, Without Toxic Ammonia




The content herein, unless otherwise known to be public domain, are Copyright 1995-2014 - Space Media Network. All websites are published in Australia and are solely subject to Australian law and governed by Fair Use principals for news reporting and research purposes. AFP, UPI and IANS news wire stories are copyright Agence France-Presse, United Press International and Indo-Asia News Service. ESA news reports are copyright European Space Agency. All NASA sourced material is public domain. Additional copyrights 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 Space Media Network on any Web page published or hosted by Space Media Network. Privacy Statement All images and articles appearing on Space Media Network have been edited or digitally altered in some way. Any requests to remove copyright material will be acted upon in a timely and appropriate manner. Any attempt to extort money from Space Media Network will be ignored and reported to Australian Law Enforcement Agencies as a potential case of financial fraud involving the use of a telephonic carriage device or postal service.