"Krasukha - 4" is another weapon of Russian army. However this weapon doesn't shoot projectiles. It's sole purpose is to generate interference to jam other signals. As the Russian article on it says it "makes missiles and planes of others blind and deaf literary". I am not sure how literal this is but what I get from
it is that it is a recently being top secret complex of jamming equipment with a range up to 300 km that can jam electronics of the enemy planes and even as they say satellites, also they that "if our Krasukha-4 is active we are sure with 99% possibility that enemy will miss our planes."