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Sat, Dec 18, 2010

ITT ADS-B Ground System Cleared For Deployment Nationwide

TIS-B, FIS-B Next Steps In NextGen Deployment

The FAA has given clearance to ITT Corp. in White Plains, NY, to deploy their ADS-B satellite-based air traffic surveillance system nationwide. ITT provides radios, routers, and radio control stations for the program.

Since 2007, ITT has been under contract to the FAA to deploy the ADS-B ground infrastructure in support of the FAA's overall Next Generation Air Transportation System (NextGen) initiative to modernize the U.S. National Airspace System. Commissioning the system follows ADS-B implementation by ITT at four sites in Alaska, the Gulf of Mexico, Louisville, KY, and Philadelphia. The "ADS-B technology we provided for these four sites is for critical services also known as surveillance services," Kefaliotis says. Critical means critical to air traffic control, he adds.

The next step involves essential services, which cover Traffic Information Services-Broadcast (TIS-B) and Flight Information Services-Broadcast (FIS-B). TIS-B provides air traffic situational awareness from ground sources such as radar and FIS-B provides information such as weather reports. For this program test sites was determined due to the variety of operational environments and challenges, Kefaliotis says. Technology was then deployed to that test site, and then it was evaluated and approved for nationwide deployment, Kefaliotis says.

"We've got 300 radio stations completed and will have 800 by 2013" when the program is complete, he adds. The radios provided by ITT are not commercial-off-the-shelf (COTS), Kefaliotis says. They were designed with stringent FAA requirements for receiving airborne data reports, he adds. ADS-B radios are less expensive than radar radios.

The radios operate on a frequency of 1090 MHz, which was allocated for this radio, he continues. ITT's radio architecture enables the radios to distribute information to any ATC facility, he says. ITT has three major radio control systems set up nationwide to enable the network -- Ashburn, VA, Dallas, and Redwood City, CA.

The radio control stations provide central processing and data distribution services, he says. Some installations will have backup radar control but some will not. For those aircraft not equipped with ADS-B the ATC facilities can merge ADS-B data with radar data creating a TIS-B capability, Kefaliotis says.

FMI: www.itt.com, www.faa.com

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