AN/SPG-51

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AN/SPG-51
File:USS Richard E Byrd (DDG 23) aft.jpg
The superstructure of the USS Richard E. Byrd (DDG-23) showing the ship's radars, 1983. There are two AN/SPG-51 directors shown directly in the center of the image.
Country of originUnited States
ManufacturerRaytheon[1]
TypePulse-Doppler radar, Missile fire-control
Frequency
  • Illuminator: 10.25-10.5 GHz[2]
  • Tracking Radar: 5.45 GHz - 5.825 GHz[2][a]
PRF
  • 4100 pps (surface)
  • 9600-16700 pps (air)[2]
Beamwidth
  • Illuminator: 0.9° (horizontal), 0.9° (vertical)
  • Tracking Radar: 1.6° (horizontal), 1.6° (vertical)
PulsewidthTracking Radar: 2.1-3.2 μs
RangeTracking Radar: 100 nmi (190 km)[2]
Azimuth360° at 12°/s[3][b]
Elevation-30° to 83°[3][b]
PrecisionFire control quality three-dimensional data
Power
  • Illuminator: 4000 W[2]
  • Tracking Radar:
    • 1600 W average[2]
    • 81 kW peak[2]

The AN/SPG-51 is an American tracking / illumination fire-control radar for RIM-24 Tartar and RIM-66 Standard missiles. It is used for target tracking and Surface-to-air missile guidance as part of the Mk. 73 gun and missile director system, which is part of the Tartar Guided Missile Fire Control System.[4]

Aircraft tracking is based on monopulse radar utilizing Pulse-Doppler radar signal processing in MK 74 MOD 14 and MK 74 MOD 15. The MK 74 MOD 15 configuration includes continuous-wave radar tracking in addition to pulse-Doppler tracking. It provides illumination for bistatic radar operation associated with missile guidance in all configurations. Older systems rely on conical scanning rather than monopulse.

In accordance with the Joint Electronics Type Designation System (JETDS), the "AN/SPG-51" designation represents the 51st design of an Army-Navy electronic device for waterborne fire control radar equipment. The JETDS system also now is used to name all Department of Defense electronic systems.

Platforms

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File:Civil and Naval Ensign of France.svg French Navy

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File:Naval ensign of Germany.svg German Navy

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File:Naval ensign of Italy.svg Italian Navy

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File:Naval Ensign of Japan.svg Japan Maritime Self-Defense Force

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File:Naval Ensign of Australia.svg Royal Australian Navy

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File:Naval Jack of the Netherlands.svg Royal Netherlands Navy

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File:Naval Jack of Spain.svg Spanish Navy

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File:Flag of the United States Navy (official).svg United States Navy

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Variants

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  • SPG-51: Original Model.
  • SPG-51B: Upgraded SPG-51 designed for use with Improved Tartar (IT) missile.[11]
  • SPG-51C: Automatic acquisition and tracking, increased reliability, and improved ECCM capabilities, clutter rejection, and multiple target resolution.[1]
  • SPG-51D: Klystron replaced with traveling-wave tube to permit the transmission to be chosen from a much wider bandwidth. Increased use of integrated circuitry and digital circuitry.[2]
  • SPG-51E: Proposed "universal fire control radar" capable of controlling the RIM-8 Talos as well as Tartar.[1] Not built in quantity.[12]

References

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  7. ^ a b c d Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
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Notes

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  1. ^ All data in infobox is for SPG-51D unless otherwise stated
  2. ^ a b It is uncertain as to which version of the SPG-51 this performance figure comes from.

See also

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