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9S18M1 Snow Drift**

Country of Origin: Russia

The 9S18M1 Snow Drift** is a three-dimensional, centimetric band, coherent-pulse target acquisition radar that forms part of the SA-11 Gadfly ** (Buk -M1) surface-to-air missile system.

The antenna consists of a flat waveguide array that produces a pencil beam that is scanned electronically in elevation. Mechanical rotation is used for azimuthal coverage.

The overall system offers low sidelobes, frequency agility and "programmed" control of azimuth and elevation scan patterns...

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