S-300 missile system
SA-10 is the NATO designation for S-300P series of Russian SAMs. It was developed as a PVO long-range system to defend strategic targets against both conventional aircraft and cruise missiles, while the contemporary S-300V series was developed as a more mobile system to protect the ground forces from aircraft and short-range ballistic missiles.
Numerous versions have since emerged with different missiles, improved radars, better resistance to countermeasures, longer range and better capability against short-range ballistic missiles or targets flying at very low altitude.
Closest western equivalent is the US Patriot system. Compared to the Patriot the SA-10 is a much larger system with heavier, longer-ranged missiles. Both systems can engage multiple targets simultaneously, employ track-via-missile guidance, and rely on a single phased-array guidance radar to guide the missiles in the air.
Export users include China, India, Syria and Vietnam.
The SA-10 is also a channel interface for the PDP-10 computer; see Systems Concepts