Sharp VC-488NS Service Manual download pdf (Page 61)

Appendix E - Glossary

2D Two-dimensional

3D Three dimensional (i.e. including altitude)

AGC Automatic Gain Control

Almanac Data transmitted by each satellite, and which provides the

approximate orbital information of all the GPS satellites

constellation (i.e. a ‘timetable’).

Antenna Also called ‘Aerial’, the device for receiving the radio signals.

ASCII A standard digital format for alpha-numeric characters

(American Standard Code for Information Interchange).

Baud Serial digital communication speed units (bits per second).

BIT Built in Test

CDU Control-Display Unit

CEP Circular Error Probability

Channel The satellite tracking unit of a GPS receiver. One may track

more than one satellite, by multiplexing, but for best

performance each satellite should be continuously tracked by

a dedicated channel so more than one channel is often

integrated into a receiver.

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Sharp VC-488NS Service Manual Page 61