Smesta

In naval mine warfare, the mine countermeasures procedure to detect, record and, if possible, track potential minelayers and to detect, find the position of, and/or identify mines during the actual minelaying.

The systematic observation of surface and sub-surface sea areas by all available and practicable means primarily for the purpose of locating, identifying and determining the movements of ships, submarines, and other vehicles, friendly and enemy, proceeding on or under the surface of the world's seas and oceans.

The systematic observation of air space by electronic, visual or other means, primarily for the purpose of identifying and determining the movements of aircraft and missiles, friendly and enemy, in the air space under observation.

Scan in which the antenna oscillates through a selected angle.

An individual responsible for coordinating and maintaining an accurate, current picture of the air situation within an assigned airspace area.

Air surveillance and control provided by airborne early warning aircraft which are equipped with search and height-finding radar and communication equipment for controlling weapon systems.