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AN/FPS-33

Description of the radar set, tactical-technical characteristics

Figure 1: AN/FPS-33

Figure 1: AN/FPS-33

Specifications
frequency: 1 350 … 1 450 MHz
(L-Band)
pulse repetition time (PRT):
pulse repetition frequency (PRF):
pulsewidth (τ): 6 µs
receive time:
dead time:
peak power: 10.4 MW
average power: 26 kW
instrumented range:
range resolution:
accuracy:
beamwidth: 1.2°
hits per scan:
antenna rotation: 6.6 and 10 min⁻¹
MTBCF:
MTTR:

AN/FPS-33

AN/FPS-33 (alias HiPAR) was an operating in L-Band High-Power Aquisition Radar for the Nike Hercules air defence missile complex.

Initially it was a fixed installation radar using a cosecant squared antenna. The reflector dimensions were 20.6 × 43.0 ft. (6.3 × 13.11 m). It was usually installed on a tower and was covered with a fixed radome. Later versions became a relocatable radar, which was mounted on 5 flat trailers. This was named AN/MPQ-44. It uses a retractable folding antenna structure (General electrics' “Project Butterfly”) and formed a fan beam pattern. The transmitter was equipped with a klystron as power amplifier.