Enterprise Air Surveillance Radar

Meet the Navy’s Enterprise Air Surveillance Radar

EASR is the U.S. Navy’s next generation radar for aircraft carriers and amphibious warfare ships, providing simultaneous anti-air and anti-surface warfare, electronic protection and air traffic control capabilities.

The radar delivers increased performance, higher reliability and sustainability, and lower total ownership cost than the radars they will replace.

EASR leverages the highly-scalable design and mature technologies of AN/SPY-6(V) Air and Missile Defense Radar (AMDR), in a tailored configuration to deliver superior capability to meet the mission requirements of carriers and amphibious ships. It features:

  • Power, efficiency, size/weight, cost and reliability benefits of gallium nitride (GaN)
  • Digital beamforming and advanced algorithms for operation in high clutter, near-land, electromagnetic interference environments.
  • Built-in cyber resiliency
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The Highly Capable, Truly Scalable Radars

Both EASR and AMDR are built with the same individual ‘building blocks’ called Radar Modular Assemblies. Each RMA is a self-contained radar in a 2’x2’x2’ box. These individual radar RMAs can stack together to form various size arrays to fit the mission requirements of any ship.

AMDR is comprised of 37 RMAs – which is equivalent to SPY-1D(V) +15 dB in terms of sensitivity. To give this perspective, it means that SPY-6 can see a target of half the size at twice the distance of today’s radars.

EASR is a 9 RMA configuration – which is equivalent to the sensitivity of the current SPY-1D(V) radar on today’s destroyers, and at only 20% of the size of the legacy SPS-48. These are considerable enhancements over the radars in service on current (and future) EASR-designated ship classes.

Two variants of EASR will be provided (each face an identical 9-RMA array):
Variant 1 – a single face, rotating radar

  • Upgraded capability replacing AN/SPS-48 and -49 air search radars
  • Primary sensor for ship self-defense and situational awareness
  • Designated radar for LHA-8 and LX(R)

Variant 2 – three face, fixed array radar

  • Upgraded capability replacing AN/SPY-4 Volume Search Radar
  • Primary sensor for ship self-defense, situational awareness and air traffic control
  • Designated radar for CVN 78 Ford-class carriers, starting with CVN 79

Reliability and Affordability

The commonality - in both hardware and software – with SPY-6 offers a host of advantages, including performance, availability and reliability; maintenance, training, logistics and lifecycle support. Its open architecture design enables maximum use of commercial-off-the-shelf components and the seamless and rapid insertion of future technology.

The radar’s performance and reliability are a direct result of more than 10 years of investment in core technologies, leveraging development, testing and production of high-powered Gallium Nitride (GaN) semiconductors, distributed receiver exciters, and adaptive digital beamforming. GaN components cost 34% less than Gallium Arsenide alternatives, deliver higher power density and efficiency, and have demonstrated meantime between failures at an impressive 100 million hours.

Both variants of the radar have an extremely high predicted operational availability due to the reliable GaN transmit/receive modules, the low mean-time-to-repair, and a very low number of Line Replaceable Units. Designed for maintainability, standard LRU replacement in the RMA can be accomplished in under six minutes – requiring only two tools.

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