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RAN 10S

Description of the radar set, tactical-technical characteristics

Figure 1: RAN-10S antenna on the Italian Navy frigate Fenice in 1989

Figure 1: RAN-10S antenna on the Italian Navy frigate Fenice in 1989

Specifications
frequency: F-Band
pulse repetition time (PRT):
pulse repetition frequency (PRF):
pulsewidth (τ):
receive time:
dead time:
peak power:
average power:
instrumented range: 60 NM (≙ 110 km)
range resolution:
accuracy: 20 m, 0.35°
beamwidth:
hits per scan:
antenna rotation: 15 and 30 min-1
MTBCF:
MTTR:

RAN 10S

The RAN 10S alias MM/SPS-774 was an operating in F-Band high-power combined maritime Air/Surface surveillance radar (so called: ASu-Radar). It is suitable for installation on medium tonnage ships, such as destroyers, frigates and corvettes. The design philosophy is the same as that of the RAN-3L and a number of items are common to both systems.

The main features are high elevation coverage, elevated data rate and high precision/resolution. The use of a coded waveform in conjunction with digital processing of the received signal gives excellent capabilities of clutter and jamming rejection, enabling it to operate in full frequency agility while maintaining anti-clutter capabilities. The antenna is a wide parabolic reflector fed by a horn, and is providing a Cosecant squared pattern by deviating from the ideal parabolic shape of the reflector curvature using a “lower lip”. It is roll and pitch stabilised and can accommodate an identification friend-or-foe antenna, mounted on top of the reflector.