Exelis has delivered six ground encryptors to Raytheon for the US Air Force's Global Positioning System’s Next-Generation Operational Control System (GPS OCX) programme.
The encryptors will be used by the air force to protect information sent between the OCX and navigation payloads on-board next-generation and legacy GPS satellites. Exelis delivered eight baseline encryptors to Raytheon in 2013.
Apart from the encryptors, Exelis is also building satellite signal simulators for testing purposes and high-precision receivers for use in the OCX ground monitoring station. It also provides software elements in the OCX navigation processing subsystem that will enable controllers to understand the exact position of GPS satellites.
Joe Rambala, vice president and general manager of positioning, navigation and timing, Exelis, said: 'The enhanced encryptors support M-code, the modernised military signal, which is an integral part of the GPS modernisation programme and important for the Department of Defense because it provides a separate signal with high jam-and spoof-resistance strictly for military use versus civilian.
'Some of today’s GPS satellites can broadcast M-code signals, but unlike GPS OCX, the current control segment cannot bring M-code online. The encryptors will be enablers for M-code processing to improve the overall GPS programme and its security.'
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