Okno Commander Colonel Sergei Chistyakov says that the complex automatically detects objects in the altitudes ranging between 2,000 and 40,000 kilometers, collects all available information on them, calculates their orbits and trajectories, and flashes the information to command centers. The complex may even be used to keep track of the targets in the altitudes of between 120 and 2,000 kilometers.
Airspace is monitored at night when objects in space reflect sunlight and the reflection provides the complex with the necessary information. Okno is fully automatic. It may operate without human supervision, keeping track of the known and newly detected objects. Since the complex operates in the passive mode, it does not use too much of electric power. (In fact, it needs as much as a house of 150 apartments uses.)