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The SA-11 GADFLY (9K37M-1 Buk) is a medium-range, semi-active, radar-guided missile using solid-rocket propulsion that provides defense against high-performance aircraft and cruise missiles. The SA-11 represents a considerable improvement over the earlier SA-6 GAINFUL system, and can engage six separate targets simultaneously, rather than the single target capability of the SA-6. Single-shot kill probability are claimed to be 60-90% against aircraft, 30-70% against helicopters, and 40% against cruise missiles, a significant improvement over the SA-6. The system is more mobile, taking only about 5 minutes to move from road march to engagement. The new system also offers significantly greater resistance to ECM than previous systems. The SA-11 system is comprised of the TELAR (9A310M1), Loader/Launcher (9A39M1), SNOW DRIFT Surveillance Radar (9S18M1), and Command and Control vehicle (9S470M1).
The SA-19 GRISOM (9M111) is a radar command guided, two-stage surface to air missile mounted on the 2S6 Integrated Air Defense System. The 2S6 vehicle is fitted with two banks of four missiles in blocks of two, which can be elevated vertically independent of each other. The SA-19 can engage aerial targets moving at a maximum speed of 500 meters/second at altitudes ranging from 15 to 3,500 meters, and at slant ranges from 2400 to 8000 meters. The missile's high-explosive fragmentation warhead is actuated by a proximity fuse if the missile passes within 5 meters of the target. The SA-19 is supported by the HOT SHOT radar system, which consists of a surveillance radar with a maximum range of 18 km, and a tracking radar with a maximum range of 13 km. The semi-automatic radar to command line-of-sight engagement requires the gunner to track the target using the roof-mounted stabilized optical sight. The SA-19 is claimed to have a kill probability of 0.65.
The baseline 9S18M1 target acquisition radar is described as being a 3-D, centimetric band, three-man, coherent pulse equipment that forms part of the Buk-M1 (NATO reporting name SA-11 'Gadfly') SAM system. The radar's antenna takes the form of a flat waveguide array that produces a pencil beam that is scanned electronically in elevation. Azimuthal coverage is provided by mechanical rotation of the antenna. Overall system design incorporates low sidelobes, frequency agility and 'programmed' control of the radar's azimuth and elevation scan patterns to optimise coverage of particular sectors according to their particular threat and jamming environments. System control is by means of an integrated digital computer and pulse-to-pulse cancellation and receiver sensitivity time control circuitry is used to minimise clutter interference. Weighing approximately 35 tons, the baseline 9S18M1 radar is mounted on a GM-567 cross-country tracked chassis. Power is drawn from either a 75 kilowatt gas turbine driven generator, a generator run-off the GM-567's engine or (via converters) a 200 V/50 Hz industrial supply and the equipment features a built-in test routine together with an integral 'telecoded' data communications link with which