An area totally shielded from radar transmissions by part of the ship's structure.



Related Terms

SCAN

In the use of radar, to search or investigate an area or space by varying the direction of the radar antenna and thus the beam. Normally scanning is done by continuous rotation of the antenna.

OVERLAP RADAR

Radar located in one sector whose area of useful radar coverage includes a portion of another sector.

PEDESTAL

  1. The support for a column. 2. A metal support carrying one end of a bridge truss or girder and transmitting any load to the top of a pier or abutment. 3. See blanking level. 4. A supporting part or the base of an upright structure, such as a radar antenna.

LOFT

  1. An upper part of a building. 2. A work area in a factory or warehouse.

RADAR SHADOW

The area shielded from radar signals because of an intervening obstruction or absorbing medium. The shadow region appears as an area void of targets.

EFFECTIVE CONFUSION AREA

Amount of chaff whose radar cross-sectional area equals the radar cross-sectional area of the particular aircraft ataparticularfrequency.

MISSILE SITE RADAR

Phased array radar located at a missile launch area to provide a guidance link with interceptor missiles enroute to their targets.

RADAR CROSS SECTION

The area of a plane element situated at the position of an object and normal to the direction of the radar transmitter, which would be traversed by a power such that, if the power were re-radiated equally in all directions with suitable polarization, it would give an echo of the same power as that given by the object itself. Also called EQUIVALENT ECHOING AREA.

GUARD ZONE

A user determined area of the radar screen, within which the presence of an echo causes an alarm to sound.

SMOOTH WATERS

Sheltered waters Class E area - for the purposes of the NSCV Part B, operations within specified geographical limits designated by the (State) Authority as smooth waters, typically waters where the significant wave height does not exceed 0.5 m from trough to crest for at least 90 per cent of the time.

Related questions

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