Description of the radar set, tactical-technical characteristics
Figure 1: AN/SPS-53A
|frequency:||9 345 … 9 405 MHz
|pulse repetition time (PRT):|
|pulse repetition frequency (PRF):||750 or 1500 Hz|
|pulsewidth (τ):||0.1 or 0.5 µs|
|peak power:||35 kW|
|instrumented range:||32 NM (≙ 60 km)|
|beamwidth:||1° or 1.6°|
|hits per scan:|
|antenna rotation:||15 rpm|
The AN/SPS-53A is a surface search radar operating in the X-Band and is capable of detecting surface targets and lowflying targets. It can be fitted with a 5 ft or an 8 ft wide antenna. The feed assembly, containing the slotted array radiating element, produces a vertical beamwidth of 20 degrees. The vertical plane beamwidth allows enough latitude to keep the target in the beam pattern during ship's pitch and roll.
The AN/SPS-53 was put into service in 1967 and replaced the AN/SPS-5 on some ships. A modernized version got a solid-state transmitter instead of the vacuum tube (probably a magnetron) and got the new designator AN/SPS-60 using the 8 ft antenna. Later the remaining AN/SPS-53A and AN/SPS-60 were replaced by Raytheons AN/SPS-64.
- Bureau of Naval Personel, Washington, D.C.; NavalPerrsonnel Program Support Activity, Washington, D.C.: “Shipboard Electronic Equipments”, NAVPERS 10794-c, Ch. 6, United States Gouvernment Printing Office, Washington 1969