Garmin GBR 21 User Manual download pdf (Page 15)

automatically default to the last beacon

transmitter used each time the GPS unit is turned

on.)

9. Select the Satellite Bar Graph Page. A “D” will

appear at the bottom of the signal strength bar

for each satellite with a corresponding differen-

tial correction or “3D Differential” will be

displayed at the top of the satellite page. This

page is useful for determining the quality of

differential coverage available. (Remember, the

more satellites with corresponding differential

corrections, the more accurate your position will

be.)

Reference

After entering the beacon’s

operating frequency, set the

bit rate as indicated on the

Beacon Reference Card.

Beacon information is also

available from the other

sources listed on the card.

DGPS:

How It Works

DGPS: How It Works

Differential GPS (DGPS) is a technique used to

improve the accuracy of the Global Positioning System.

DGPS reduces the effects of Selective Availability(SA),

ionospheric variations and can improve position accuracy

to better than 10 meters.

Figure 4: The DGPS System

A DGPS system consists of the following:

• DGPS Beacon Transmitter and GPS Receiver at

a known location

• Shipboard DGPS Beacon Receiver

• Shipboard GPS Receiver (DGPS capable)

• GPS Satellites

GPS SIGNAL

DGPS (CORRECTION) SIGNAL

SHIPBOARD GPS AND

DGPS RECEIVERS

CORRECTION

DATA

GPS RECEIVER

STATION AND

DGPS TRANSMITTER

1 2 ... 10 11 12 13 14 15 16 17 18 19 20 ... 23 24

Comments to this Manuals

No comments

Garmin GBR 21 User Manual Page 15

Comments to this Manuals

ENSONIQ Netzsteckeradapter Benutzerhandbücher

Garmin GBR 21 User Manual Page 15

Comments to this Manuals

Related products and manuals for GPS receiver Garmin GBR 21

ENSONIQ Netzsteckeradapter Benutzerhandbücher