[1][2] The system upgrades the "dumb" rockets with laser guidance, very significantly increasing their accuracy.
The notable novelty is that the system does not use aerodynamic flight control (e.g. tail fins), but impulse steering with mini-thrusters.
[1] The concept has been demonstrated by Ametech (Russian: Аметех - Автоматизация и механизация технологий[3]) on 1999 MAKS airshow,[1] but it is not known if the system has been manufactured since, and in what numbers.
The name Ugroza (sometimes transliterated Ugrosa), have been first used for the company's semi-active laser-guided projectile (SAL-GP) for the 122 mm BM-21 Grad series of multiple rocket launchers (it did not enter production and have been shelved[2] as of 2010).
The designation of rockets upgraded with Ugroza are given the suffix "Kor"[1] (from Russian корректируемые, meaning "correctable"):