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Type 911

Description of the radar set, tactical-technical characteristics

Figure 1: Type 911

Figure 1: Type 911

Specifications
frequency: X-Band K-Band
pulse repetition time (PRT):
pulse repetition frequency (PRF):
pulsewidth (τ):
receive time:
dead time:
peak power:
average power:
instrumented range: 18 NM (≙ 33 km)
range resolution:
accuracy:
beamwidth:
hits per scan:
antenna rotation:
MTBCF:
MTTR:

Type 911

Type 911 is dual frequency (X-Band and K-Band) differential tracking radar designed specifically to match the engagement envelope of the Seawolf missile. The Type 911 spots targets at low elevations, such as sea-skimming missiles, and in cluttered environments.

The X-Band tracking antenna is a Cassegrain reflector with monopulse feed. The reflector is fed by a wide angle four-horn monopulse cluster. This part of the radar is derived from the ST800 radar family.

The K-band part is derived from the landbased Blindfire tracking radar. Both antennas use a magnetron transmitter with a coherent-on-receive, digital FFT signal processor.