Northrop Grumman Demonstrates S-Band AESA Naval Radar


Released on Thursday, May 4, 2006
United States of America
AN/SPQ-11 Cobra Judy
CJR
AESA - Active Electronically Scanned Array
CJR - Cobra Judy Replacement
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 transmit/receive modules.

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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