Missiles are guided by the 30N6 FLAP LID or naval 3R41 Volna (TOP DOME) radar using command guidance with terminal semi-active radar homing. Later versions use the 30N6 FLAP LID B or TOMB STONE radar to guide the missiles via command guidance/seeker-aided ground guidance (SAGG). SAGG is similar to the Patriot's TVM guidance scheme. The earlier 30N6 FLAP LID A can guide up to four missiles at a time to up to four targets, and can track up to 24 targets at once. The 30N6E FLAP LID B can guide up to two missiles per target to up to six targets simultaneously. Targets flying at up to Mach 2.5 can be successfully engaged or around Mach 8.5 for later models. One missile can be launched every three seconds. The mobile control centre is able to manage up to 12 TELs simultaneously.