Cobra_Judy
The AN/SPQ-11 Cobra Judy was a PESA radar found on the USNS Observation Island (T-AGM-23) missile range instrumentation ship.
It was used for space tracking, ballistic missiles tracking and other instrumentation. Cobra Judy was the sea component of the COBRA program[clarification needed] for monitoring missile launches and outer space. Cobra Judy was replaced by the Cobra Judy Replacement (CJR) in April 2014.