9S18M
Description of the radar set, tactical-technical characteristics
Figure 1: 9S18M
| Specifications | |
|---|---|
| frequency: | H/I-Band |
| pulse repetition time (PRT): | |
| pulse repetition frequency (PRF): | |
| pulsewidth (τ): | |
| receiving time: | |
| dead time: | |
| peak power: | |
| average power: | 2.5 … 4.5 kW |
| instrumented range: | 160 km |
| range resolution: | 400 m |
| accuracy: | 130 m; 0.3° |
| beamwidth: | 3 … 4,5° |
| hits per scan: | |
| antenna rotation: | 3 … 14 rpm |
| MTBCF: | |
| MTTR: | |
9S18M
The 9S18M “Kupol-M” (Cyrillic: «Купол-М»; NATO designation: “Snow Drift”) is a mobile 3-D acquisition radar operating frequency agile in the H/I-Band. The radar uses a rectangular phased array antenna of slotted waveguides with mechanical rotation in azimuth and an electronically steered pencil beam in elevation. The transmitters' waveform is alternate an unmodulated pulse and a pulse with linear intra-pulse frequency modulation (chirp). The radar can track up to 50 targets at a time, and provide target designation on six targets. It is used for target assignment for the 9K37 “Buk” air defense missile system (Cyrillic: «Бук М1»; NATO designation: SA-11 “Gadfly”).
The radar was developed in 1977 and has been in the armament of some states of the former Soviet Union and Finland since 1980.