US Air Force, Raytheon successfully evaluate Ground Based Sense and Avoid capabilities for safe UAS flight in National Airspace

  US Air Force, Raytheon successfully evaluate Ground Based Sense and Avoid
         capabilities for safe UAS flight in National Airspace System

Raytheon automation and radar system for air traffic control is NAS-certified,

PR Newswire

MARLBOROUGH, Mass., Nov. 15, 2012

MARLBOROUGH, Mass., Nov. 15, 2012 /PRNewswire/ --As the U.S. government
prepares for unmanned aerial systems (UAS) in the National Airspace System by
2015, the U.S. Air Force and Raytheon Company (NYSE: RTN) have conducted
concept evaluation demonstrations that show existing air traffic control
equipment could be modified to safely track the presence of nearby unmanned

Ground Based Sense and Avoid (GBSAA) -- based on the Airport Surveillance
Radar Model-11 (ASR-11) and the repurposed Standard Terminal Automation
Replacement System (STARS) air traffic control system -- reduces the need for
costly new infrastructure.

The testing near Edwards Air Force Base at Gray Butte Airfield in California
involved a moving "dynamic protection zone" -- a collision avoidance alerting
capability -- around the UAS. The "dynamic protection zone" provides a series
of alerts to the UAS pilot as airborne objects (i.e., balloons or
ultra-lights) approach to avoid near mid-air collisions. GBSAA also builds on
wind farm mitigation technology used to mitigate interference from wind
turbines near airports.

Using Raytheon's ASR-11, the STARS automation system, and its surveillance
data processor, repurposed for GBSAA, pilots and controllers were given alerts
of intruding airborne objects near surrogate unmanned aerial systems and were
able to keep them safely separated.

ASR-11, the STARS system and its surveillance data processor are proven,
NAS-certified systems for use in safely separating aircraft today. Repurposing
these assets provides a cost-effective approach that enables safe UAS flight
in the NAS.

"Our solution provides the Federal Aviation Administration and the Department
of Defense with a cost-effective and safe approach to handle the thousands of
unmanned aerial systems that'll be flying in our airspace in the next few
years," said Joseph Paone, director of Air Traffic Management for Raytheon's
Network Centric Systems business.

"Our system properly notifies controllers and pilots of intrusions and
accurately shows aircraft altitude, which is important in keeping commercial
aircraft, unmanned aerial systems and other hazards safely separated," he

Leveraging the existing NAS-certified installed-base of ASR-11 and STARS
systems, Raytheon will continue testing GBSAA with the U.S. Air Force at other
sites across the country.

About Raytheon

Raytheon Company, with 2011 sales of $25 billion and 71,000 employees
worldwide, is a technology and innovation leader specializing in defense,
homeland security and other government markets throughout the world. With a
history of innovation spanning 90 years, Raytheon provides state-of-the-art
electronics, mission systems integration and other capabilities in the areas
of sensing; effects; and command, control, communications and intelligence
systems, as well as a broad range of mission support services. Raytheon is
headquartered in Waltham, Mass. For more about Raytheon, visit us at and follow us on Twitter @raytheon.

Media Contact
Peter Ramjug

SOURCE Raytheon Company

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