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AN/SPG-51

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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]

AN/SPG-51
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]

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.

Platforms

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  French Navy

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  German Navy

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  Italian Navy

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  Japan Maritime Self-Defense Force

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  Royal Australian Navy

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  Royal Netherlands Navy

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  Spanish Navy

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  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]
  •  
    AN/SPG-51 radars of a Cassard class frigate

References

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  1. ^ a b c Friedman, Norman (1981). Naval radar. Annapolis, Md.: Naval Institute Press. pp. 179–180. ISBN 0-87021-967-7. OCLC 8262709.
  2. ^ a b c d e f g h Hemenway, D.F.; Navid, B.N. (September 1978). Reliability of Naval Radar Systems (Report). Washington D.C.: Naval Research Laboratory. pp. 83–88.
  3. ^ a b Winter, Charles F. (Winter 1974). "Mechanically-Scanning Antennas". Electronic Progress. 16 (4): 4. Bibcode:1974ElPr...16....2W.
  4. ^ Jane's weapon systems. 1972-73: 4th ed. Ronald Thomas Pretty, Dennis Henry Ross Archer. London: Jane's Yearbooks. 1972. p. 540. ISBN 0-354-00105-1. OCLC 655668873.{{cite book}}: CS1 maint: others (link)
  5. ^ a b c d e Jordan, John (1986). An illustrated guide to modern destroyers. New York, N.Y.: Prentice Hall. pp. 58, 70, 77, 79, 134. ISBN 0-13-450776-2. OCLC 13010345.
  6. ^ a b c d e f g h i The World's navies. Christopher Chant. Newton Abbot [England]: David and Charles. 1979. pp. 63, 92–93, 104, 122, 229, 231, 241. ISBN 0-7153-7689-6. OCLC 5798981.{{cite book}}: CS1 maint: others (link)
  7. ^ a b c d Combat fleets of the world : their ships, aircraft, and armament, 1986/87. Jean Labayle Couhat, United States Naval Institute (6th ed.). Annapolis, Md.: Naval Institute Press. 1986. pp. 13, 123, 420, 643. ISBN 0-85368-860-5. OCLC 14161346.{{cite book}}: CS1 maint: others (link)
  8. ^ Jane's fighting ships, 2009-2010 2009/2010. Stephen Saunders (112th ed.). Coulsdon: Jane's Information Group. 2009. p. 395. ISBN 978-0-7106-2888-6. OCLC 652063550.{{cite book}}: CS1 maint: others (link)
  9. ^ NAVEDTRA 10199-C: Gunner's Mate M 3 & 2. Naval Education and Training Support Command. 1977. p. 147.
  10. ^ Jane's strategic weapons systems. Duncan Lennox, Roger Loasby, Jane's Information Group (1st ed.). Coulsdon, Surry, Eng.: Jane's Information Group. 1989. p. 405. ISBN 0-7106-0880-2. OCLC 20284225.{{cite book}}: CS1 maint: others (link)
  11. ^ "Evaluating the DDG". Proceedings of the U.S. Naval Institute. 91 (7): 749. July 1, 1965. Retrieved February 18, 2023.
  12. ^ Friedman, Norman (1989). The Naval Institute guide to world naval weapons systems. United States Naval Institute. Annapolis, Md.: Naval Institute Press. p. 201. ISBN 0-87021-793-3. OCLC 20098065.

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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