AN/SPG-51

Naval Radar

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Basic Information

Name

AN/SPG-51

Designation

—

Alternate Designation

—

Equipment Type

Naval Radar

Manufacturer

Raytheon E-Systems

Date of Introduction

—

Description

The AN/SPG-51 is a C-band naval radar system designed for gun and missile fire control, operating within a frequency range of 5,450 to 5,825 MHz. It incorporates an X-band continuous wave target illuminator specifically for RIM-24 Tartar and RIM-66 Standard missiles. The system features a 7.7-foot (2.5-meter) diameter dual-purpose parabolic reflector. While older versions of the target tracking radar utilized a klystron with a peak power of 30 kW, the AN/SPG-51D version was upgraded with a traveling wave tube, achieving a peak power of 81 kW, though the illuminator consistently uses a klystron across all versions. The radar has an instrumented range of 100 nautical miles (180 km) and a beamwidth of 1.6 degrees.

Naval & Littoral Specifications

Range 100.0 nm

Technical Characteristics

frequency 5 450 … 5 825 MHz (C band)

pulse repetition frequency (PRF) 4 100 Hz or 9 600 … 16 700 Hz

pulsewidth (τ) 2.1 or 3.2 µs

peak power 81 kW

average power 1.6 kW

instrumented range 100 NM (≙ 180 km)

beamwidth 1.6°

Details

Country of Origin United States

Category Sea Based Sensors

Naval > Sea Based Sensors

Sources

radartutorial.eu: https://www.radartutorial.eu/19.kartei/07.naval2/karte032.en.html

Classification

Domain

Naval & Littoral

Equipment Status

Active

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