Hisar is a family of short and high to medium air defense surface-to-air missile systems being developed by Roketsan and Aselsan since 2007. The missiles are developed by Roketsan, while most sensors and electronics are developed by Aselsan. The missile family consists of the short range Hisar-A and medium range Hisar-O air defence system. Missile seeker of Hisar-A and Hisar-O is infrared homing. The model using RF Seeker, Hisar O+ RF, and its naval version, Hisar-D RF, were announced later. The long range version “Hisar-U” evolved into the Siper long range air defence system project. From Wikipedia
