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Argos 5000D

Description of the radar set, tactical-technical characteristics

Figure 1: Argos 5000D

Figure 1: Argos 5000D

Specifications
frequency: 1 250 … 1 350 MHz
(L-band)
pulse repetition time (PRT):
pulse repetition frequency (PRF): 330 Hz
pulsewidth (τ): 6 µs
receiving time:
dead time:
peak power: 5 MW
average power: 10 kW
instrumented range: 250NM (≙ 450 km)
range resolution: 150 m
accuracy:
beamwidth: 1.5°
hits per scan: 14
antenna rotation: 6 rpm
MTBCF:
MTTR:

Argos 5000D

Argos 5000D was an operating in the L-band maritime early warning and acquisition radar of far-away targets.

The antenna was a single curved parabolic reflector illuminated by a feed made up by a vertical array of horizontally polarized dipoles. The reflector was simultaneously used for the integrated IFF system. The transmitter used a stabilotron followed by an amplifier stage with an amplitron. The waveform is a Barker code with 5 or 7 sub-pulses of 0.9 µs length each. The radar had very modern MTI system for that time, which was also able to compensate for the ship’s speed and to suppress sea clutter. At long range, the Dicke-Fix processing could be used.

In 1965, a smaller antenna was mounted with a lower wind load. The Radar was decommissioned in the mid-1970s.