Description of the radar set, tactical-technical characteristics
Figure 1: 9S18M
|pulse repetition time (PRT):|
|pulse repetition frequency (PRF):|
|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|
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.