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GPS terms- Glossary of GPS Terms - GPS Glossary

  GPS terms & abbreviations for global positioning system. Explanations of GPS terms

g

A   B   C   D   E-F   G   H-K   L-M   N-O   P-Q   R   S   T-U   V-Z

 

B

 

Bandwidth

That range of frequencies that compose a signal

Base Station

Also called a reference station. A receiver that is set up on a known location specifically to collect data for differentially correcting rover files. The base station calculates the error for each satellite and, through differential correction, improves the accuracy of GPS positions collected at unknown locations by a roving GPS receiver

Baseline

The difference in three dimensional coordinates (X, Y, Z) computed from the difference in simultaneous carrier phase observations at two or more receivers

Bearing

The compass direction from position to a destination

Bench mark

A relatively permanent material object, natural or man-made, with a known elevation. A bench mark can be used as a reference point when navigating a route or in determining the elevation of nearby land features

 

 

Binary Biphase Modulation

The phase modulation technique used to transmit a GPS signal. The phase of a carrier generated by a satellite is shifted by 180 degrees when there is a code or message binary signal level transition, either from 0 to 1 (normal to mirror image) or from 1 to 0 (mirror image to normal)

BIPM

Bureau International des Poids et Mesure.The international bureau of weights and measurements, in Paris. Responsible for the UTC time scale

Bit

A unit of information in an electronic system expressed as a choice between two possible values, for example, 0 or 1

Blue Book

Term referring to the Federal Geodetic Control Subcommittee publication "Input Formats and Specifications of the National Geodetic Survey Data Base" which defines the file formats for data submission to the National Geodetic Reference System.

BNC

Bayonet N Connector. A common type of antenna connector. Push and Turn to lock

BRG

Bearing. The direction to the To waypoint