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.