AN/SPG-51

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]

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.

  1. ^ Cite error: The named reference naval-radar was invoked but never defined (see the help page).
  2. ^ a b c d e f g Cite error: The named reference adc016190 was invoked but never defined (see the help page).
  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)


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