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2020-03-01
The Most Watchful Eye: Early Warning Radar in Missile Defence
When it comes to missile defence, early warning is the key. When detecting and tracking of incoming ballistic missiles, Early Warning Radar can distinguish between actual attacks and objects that pose no threat.
Raytheon’s Early Warning Radar, or EWR, has been continually modernised to provide early detection and tracking of ballistic missiles. Boasting a 5,000 kilometre range and offering space surveillance, EWR gets the warning as quickly as possible to determine which attacks pose most threat.
“If we didn’t have an EWR in the case of an incoming intercontinental ballistic missile, we would lose tens of minutes of warning time, and the consequence of that, in terms of missile defence, means a much smaller window of opportunity to protect a populated area,” says Raytheon’s Monica Giffin, Program Manager of Solid State Module Replacement, or SSMR. “With ongoing modernisation, it’s like breathing new life into systems we hold close to our hearts.”
Modernisation is also the key to keeping radars effective in the future. It was logical then that, in September 2019, the U.S. Air Force awarded Raytheon close to a $500 million SSMR contract to provide new transmit/receive modules for all operational AN/FPS-132 EWRs.
An Eye on Space
EWR has become a key sensor for the U.S. Missile Defence Agency’s Ballistic Missile Defence System. The performance of surveillance in space enables ballistic missiles to be intercepted above the atmosphere, taking them away from any intended targets in the U.S. or allied nations.
The EWR program leverages Raytheon's 70-year heritage of developing innovative and reliable radar solutions, including nearly all of today's ballistic missile defence radars. What is more, the EWRs add missile defence capabilities to the Raytheon-developed PAVE PAWS and Ballistic Missile Early Warning Systems radars.
By providing early detection and precise tracking of incoming ballistic missiles, the EWR supports the interception of threatening ballistic missiles above the atmosphere, while concurrently performing early warning and space surveillance missions. Raytheon’s Director of International EWR Programs, David Woodward confirms that, “Our radar is designed so the surveillance fence is up all the time, resulting in a high probability of detecting missiles, satellites and aircraft.”
It is the radar's 5,000-kilometre detection range and capacity for 360-degree line-of-sight, enabling it to peer above the atmosphere to prevent an adversary from overflying detection, which explains why the United States and partner nations have invested more than $9 billion in Raytheon's EWR technology. What is more, the radar benefits from a significant Raytheon investment in gallium nitride (GaN) circuit technology which offers enhanced performance and lower costs while giving the radar more power and wasting less in excess heat.
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