NavCom SF-2050 Rev.D User Manual

Page 55

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SF-2050 User Guide - Rev. D

civilian code see

Coarse Acquisition code

.


Coarse Acquisition code (C/A or

Civilian code

)

the pseudo-random code generated by

GPS

satellites. It

is intended for civilian use and the accuracy of readings
using this code can be degraded if

selective availability

(

S/A

) is introduced by the US Department of Defense.


COM# shortened form of the word Communications.
Indicated a data communications port to/from the

GPS

sensor to a

controller

or data collection device.


controller a device consisting of hardware and software
used to communicate and manipulate the I/O functions
of the

GPS

sensor.


Compact Measurement Record (CMR) a standard
format for

DGPS

corrections used to transmit

corrections from a

reference station

to

rover

sensors.


data files files that contain Proprietary,

GPS

, NMEA,

RTCM,

or any type of data logged from a

GPS

receiver.


DB9P a type of electrical connector containing 9
contacts. The P indicates a plug pin (male).

DB9S a type of electrical connector containing 9
contacts. The S indicates a slot pin (female).

DGPS see

Differential GPS

.


Differential

GPS

(

DGPS

) a positioning procedure that

uses two receivers, a

rover

at an unknown location and

a

reference s ation

at a known, fixed location. The

reference station

computes corrections based on the

actual and observed ranges to the satellites being
tracked. The coordinates of the unknown location can
be computed with sub-meter level precision by

t

Glossary-53

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