|Role and Mobility||Ship Self-Defense, Situational Awareness, Air Traffic Control; Ship-mobile|
|Air Defense Interceptor Systems||N/A|
|Targets||Anti-Ship Cruise Missiles, Drones, Fixed-Wing Aircraft, and Helicopters|
|Status/Exports||In production; None|
The Enterprise Air Surveillance Radar or EASR is the US Navy’s next generation radar for aircraft carriers and amphibious warfare ships. It will provide simultaneous anti-air and anti-surface warfare, electronic protection, and air traffic control capabilities.[i] EASR is built on Radar Modular Assembly (RMA) technology. Each RMA is a self-contained radar in a ‘2x2x2’ box that can integrate with each other to create radar arrays of various sizes depending on current needs.[ii]
Two variants of EASR will be provided:
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[iii]
EASR is meant to be the replacement for the Volume Search Radar for the CVN 78 class and the AN/SPS-48 and AN/SPS-49 radar systems for numerous other ship classes.[iv]
Strategically, EASR is a valuable radar because it is 20% smaller than the radars it is replacing, but just as capable and sensitive to incoming threats. Its smaller size frees up space on a ship or aircraft carrier for other necessities.[v] Beyond that, EASR is capable of operating in high clutter, near-land, and in electromagnetic interference environments. These capabilities make it a valuable radar in areas with a high chance of interference. Its built-in cyber resiliency also offers protection against the possibility of cyber-attacks during operations.
August 2017: EASR underwent its Critical Design Review.
June 2017: EASR is slated to go on the now-under-construction USS Kennedy (CVN 79).[vi]
March 2017: EASR successfully conducted its Preliminary Design Review.
August 2016: Raytheon is awarded a contract for the US Navy’s Enterprise Air Surveillance Radar.[vii]