Jump to content

AN/SPQ-11

From Wikipedia, the free encyclopedia
(Redirected from Cobra Judy)
AN/SPQ-11
Close-up of the front of Cobra Judy radar, 1983.
Country of originUnited States
Introduced1983
No. built1
TypePassive electronically scanned array radar
Frequency2900–3100 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 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 Airforce code name for the afloat phased-array radar that was designed with a primary mission of monitoring Soviet missile tests and which operated in conjunction with land based phased-array radar Cobra Dane and Cobra Ball aircraft.[1] Cobra Judy was replaced by the Cobra Judy Replacement (CJR) in April 2014.

In accordance with the Joint Electronics Type Designation System (JETDS), the "AN/SPQ-11" designation represents the 11th design of an Army-Navy electronic device for surface ship special radar system.[2][3] The JETDS system also now is used to name all Department of Defense electronic systems.

Replacement

[edit]

The Cobra Judy Platform, USNS Observation Island was taken out of service and stricken from the Naval Vessel Register March 31, 2014.[4] On 31 March 2014, the Cobra Judy Replacement program, aboard USNS Howard O. Lorenzen (T-AGM-25) reached initial operational capability (IOC). According to the Naval Sea Systems Command (NAVSEA), the U.S. Air Force also assumed operational and sustainment responsibilities for the ship.[5] The inertial navigation system for the antenna stabilization and alignment had been provided by iMAR Navigation.

See also

[edit]

References

[edit]
  1. ^ Richelson, Jeffery (October 1986). "Monitoring the Soviet Military". Arms Control Today. 16 (7): 16. JSTOR 23623200.
  2. ^ Avionics Department (2013). "Missile and Electronic Equipment Designations". Electronic Warfare and Radar Systems Engineering Handbook (PDF) (4 ed.). Point Mugu, California: Naval Air Warfare Center Weapons Division. p. 2-8.1.
  3. ^ Winkler, David F. (1997). "Radar Systems Classification Methods". Searching the Skies: The Legacy of the United States Cold War Defense Radar Program (PDF). Langley AFB, Virginia: United States Air Force Headquarters Air Combat Command. p. 73. LCCN 97020912.
  4. ^ "USNS Observation Island (T-AGM 23)". Naval Vessel Register. Retrieved 2 March 2012.
  5. ^ "Cobra Judy Replacement Achieves Initial Operational Capability". Navy.mil. 1 May 2014. No. NNS140501-26. Archived from the original on May 5, 2014. Retrieved 8 May 2014.
[edit]
Stub icon

This United States Navy article is a stub. You can help Wikipedia by expanding it.

Stub icon

This electronics-related article is a stub. You can help Wikipedia by expanding it.

Retrieved from "https://en.wikipedia.org/w/index.php?title=AN/SPQ-11&oldid=1294424602"