A special fixture fitted to a vessel or incorporated into the design of certain aids to navigation to enhance their ability to reflect radar energy. In general, these fixtures will materially improve the visibility for use by vessels with radar.


Related Terms

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.

PANTOGRAPHY

System for transmitting and automatically recording radar data from an indicator to a remote point.

PANORAMIC RADAR

Nonscanning radar which transmits signals over a wide beam in the direction of interest.

OVERLAP RADAR

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

NUTATOR

A mechanical or electrical device used to move a radar beam in a circular, conical, spiral, or other manner periodically to obtain greater air surveillance than could be obtained with a stationary beam.

NOTCH

1. Rectangular depression extending below the sweep line of the radar indicator in some types of equipment. 2. A Vshaped indentation or cut in a surface or edge.

MULTISTATIC RADAR

Radar in which successive antenna lobes are sequentially engaged to provide a tracking capability without physical movement of the antenna.

MONOPULSE RADAR

Radar in which directional information is obtained with high precision by using a receiving antenna system having two or more partially overlapping lobes in the radiation patterns.

MISSILE SITE RADAR

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

MICROWAVE EARLY WARNING

High-power, long-range radar with a number of indicators, giving high resolution, and with a large traffichandling capacity; used for early warning of missiles.

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