AN/SPY-1

AN/SPY-1
	The AN/SPY-1 radar antennas are the light grey octagonal panels on the front and starboard side of the superstructure of USS Lake Erie.
Country of origin	United States
Introduced	1973
Type	3D Air search
Frequency	S band
Range	370 km (200 nmi; 230 mi)
Azimuth	0–360°
Elevation	Horizon–zenith
Power	6 MW

The AN/SPY-1^[a] is a United States Navy 3D radar system manufactured by Lockheed Martin. The array is a passive electronically scanned system and a key component of the Aegis Combat System. The system is computer controlled and uses four complementary antennas to provide 360-degree coverage. The system was first installed in 1973 on USS Norton Sound and entered active service in 1983 as the SPY-1A on USS Ticonderoga. The -1A was installed on ships up to CG-58, with the -1B upgrade first installed on USS Princeton in 1986. The upgraded -1B(V) was retrofitted to existing ships from CG-59 up to the last, USS Port Royal.

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^ Joint Electronics Type Designation System

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[4] Joint Electronics Type Designation System

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