AN/SPQ-11

AN/SPQ-11

Close-up of the front of Cobra Judy radar, 1983.
Country of origin	United States
Number built	1
Type	Passive electronically scanned array radar
Frequency	2900-3100 MHz (E\F band)

Aft view of the USNS Observation Island showing the location of the Cobra Judy array.

The AN/SPQ-11 Cobra Judy is a PESA radar found on the Observation Island-class missile range instrumentation ship.

It is used for space tracking, ballistic missiles tracking and other instrumentation.

Cobra Judy is the sea component of the COBRA program for monitoring missile launches and outer space.

See also

• USNS Observation Island (T-AGM-23)
• Cobra Dane
• Cobra Ball
• Cobra Eye

External links

• Cobra Judy@FAS