9S18
Description of the radar set, tactical-technical characteristics

Figure 1: 9S18
Specifications | |
---|---|
frequency: | I-Band |
pulse repetition time (PRT): | |
pulse repetition frequency (PRF): | |
pulsewidth (τ): | |
receiving time: | |
dead time: | |
peak power: | |
average power: | 3.5 kW |
instrumented range: | 120 km |
range resolution: | |
accuracy: | 1000 m; 1° |
beamwidth: | 4° |
hits per scan: | |
antenna rotation: | 3 … 12 rpm |
MTBCF: | |
MTTR: |
9S18
The 9S18 “Kupol” (also designated 1RL135, Cyrillic: 9С18 "Купол-М" or 1РЛ135; NATO designation: “Tube Arm”) is operating in the I-Band fully coherent, mobile 3D target assignment radar for the 9K37 “Buk” («Бук», NATO designation: SA-11 “Gadfly”) air defense missile system. It uses a frequency-controlled phased array antenna in front of a single curved parabolic reflector.