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Rikaline – Rikaline GPS-6020 CF GPS User Manual

Page 10

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GPS-6020 Operating Manual

Rikaline

Specifications subject to change without prior notice

Rikaline

International Corp.

10

F, 64, Kang-Ding Road, Taipei 108, Taiwan

Tel: ++886 2 2370 4688 Fax: ++886 2 2370 4686 E-Mail:

[email protected]

web:

www.rikaline.com.tw

10

$GPVTG,309.62,T, ,M,0.13,N,0.2,K*6E

Table 4-10 VTG Data Format

Name Example

Units

Description

Message ID

$GPVTG

VTG protocol header

Course 309.62

Degrees Measured

heading

Reference T

True

Course

Degrees Measured

heading

Reference M

Magnetic

(1)

Speed

0.13

Knots

Measured horizontal speed

Units N

Knots

Speed

0.2

Km/hr

Measured horizontal speed

Units

K

Kilometers per hour

Checksum *6E

End of message termination


(1) All “course over ground” data are geodetic WGS84 directions.

4.1.7 Time & Date (ZDA)

Table 4-11 contains the values for the following example:

$GPVTG,114523.62,12,04,2001,10,34*6E


Table 4-11 zda Data Format

Name Example

Units

Description

Message ID

$GPZDA

ZDA protocol header

Hour, Min, Sec, Sub

Sec

114523.62 Hhmmss.ss

Day

12

Day in UTC, 01to 12

Month

04

Month in UTC, 01 to 12

Year

2001

Year in UTC

Local Zone Hours

10

Local zone hours, +/- 13 hours

Local Zone Minutes

34

L

ocal zone minutes, 0 to +59

Checksum *6E

End of message termination


4.2 RTCM Received Data

The default communication parameters for DGPS Input are 9600 baud, 8 data bits, stop bit, and no parity.

Position accuracy of less than 5 meters can be achieved with the GPS-6020 by using Differential GPS (DGPS)
real-time pseudo-range correction data in RTCM SC-104 format, with message types 1, 5, or 9. As using
DGPS receiver with different communication parameters, GPS-6020 may decode the data correctly to generate
accurate messages and save them in battery-back SRAM for later computing.