Memorex RX 1 Smart Manual de Instalação descarregar pdf (Página 254)

Simrad MX500 | 253

UTM

See UNIVERSAL TRANSVERSE MERCATOR.

UNIVERSAL TRANSVERSE MERCATOR

Alternative grid system used in harbor areas and for land

applications instead of latitude and longitude.

VDL

VHF Data Link.

VDOP (Vertical Dilution of Precision)

An indicator of the accuracy in altitude. See DILUTION

OF POSITION.

VELOCITY MADE GOOD (VMG)

The speed by which the vessel is moving in the upwind

direction. When tacking, the optimization should be

based on VMG (assuming that TWD is expected to be

fairly constant). See also WAYPOINT CLOSURE VELOCITY.

VHF

Very High Frequency – A set of frequencies in the MHz

region.

VISIBLE SATELLITE

A satellite whose orbit has placed it above the earth’s

horizon (elevation angle >0°) from the location of the

navigator and is, therefore, available for acquisition. The

navigator will not use satellites with an elevation angle <

5°.

VMG

See VELOCITY MADE GOOD.

VTS

Vessel Traffic Service

WAYPOINT

A point, usually along the track of the vessel or vehicle,

whose position coordinates may be stored in the naviga-

tor. The point position is the basis for the heading, range,

heading-to-steer, estimated time of arrival, and steering

display calculations.

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Memorex RX 1 Smart Manual de Instalação Página 254