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AN/SPS-1

Description of the radar set, tactical-technical characteristics

Figure 1: AN/SPS-1 (Drei-Seiten-Riss)

Figure 1: AN/SPS-1 (Drei-Seiten-Riss)

Specifications
frequency:  … 
(X-band)
pulse repetition time (PRT):
pulse repetition frequency (PRF):
pulsewidth (τ):
receiving time:
dead time:
peak power:
average power:
instrumented range:
range resolution:
accuracy:
beamwidth:
hits per scan:
antenna rotation:
MTBCF:
MTTR:

AN/SPS-1

The AN/SPS-1 was a very early shipborne radar for air- and surface surveillance operating on two different frequencies in the X-band.

The radar used three antennas mounted on an unstabilized turntable: a 48 × 12¾ inch (≙ 122 × 32 cm) parabolic antenna for surface surveillance, above it a 120-inch (≙ 3.05 m) wide waveguide slot antenna for air surveillance, and a 111 inch (≙ 2,82 m) wide beam-shaped array antenna for L-band interrogation friend-or-foe.

The radar was developed in 1947.