Northrop Grumman Corporation has designed, developed and successfully tested a
new S-band active electronically scanned array (AESA) radar technology intended
to provide the U.S. Navy with a smaller, lighter and more capable alternative to
current S-band, ship-based radars.
The test, held in March at Northrop Grumman's outdoor integration test facility
in Baltimore, utilized a sub-array of the S-band antenna being developed by the
company in support of the Navy's Cobra Judy Replacement (CJR) program. CJR is an
integrated, surveillance and ballistic missile data collection radar system
designed to support U.S. treaty monitoring activities.
The test demonstrated the full power operation of the antenna, including the
full pulse width and duty cycle required for the CJR mission. The demonstration
also proved the enhanced capabilities of Northrop Grumman's S-band high power
The prototype antenna building block was built using standard processes and
equipment that will be used during the full-scale production of the antenna.
Northrop Grumman is currently building a pilot production unit to provide
additional risk reduction as the program transitions into the material
procurement and build phase of the CJR contract.
Raytheon Integrated Defense Systems is the prime contractor for the CJR program,
while Northrop Grumman is responsible for the design and construction of the CJR
S-band phased array antenna.
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