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The "IGLA-1" is a portable anti aircraft missile system with solid propellant guided missile. It is a man-portable surface-to-air missile system, a further development from the SA-7 & SA-14 series, and is an improved version of the SA-18 GROUSE, which was introduced in 1983, three years before the SA-16.
The SA-16 features a new seeker and modified launcher nose cover. Whereas the the SA-18 9M39 missile is fitted with an aerodynamic spike on the nose, the 9M310 missile of the SA-16 has the spike replaced with an aerodynamic cone held in place with a wire tripod. On the SA-18 the protective cover of the seeker is conical, on the SA-16 it is tubular with a prominent lip at the forward edge. The 9M313 missile of the SA-16 employs an IR guidance system using proportional convergence logic, and an improved two-color seeker, presumably IR and UV). The seeker is sensitive enough to home in on airframe radiation, and the two-color sensitivity is designed to minimize vulnerability to flares. The SA-16 has a maximum range of 5000 meters and a maximum altitude of 3500 meters.