Rikaline, A.1.5 recommended minimum specific gnss data (rmc), A.1.6 course over ground and ground speed – Rikaline GPS-6017 User Manual

Page 14

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GPS-6017 Operating Manual

Rikaline

Rikaline International Corp.

14F, 171, Chen-Gong Road, SanChong City, Taipei 241, Taiwan

Tel: ++886 2 8973 1899 Fax: ++886 2 8973 1896 E-Mail:

[email protected]

Web: www.rikaline.com.tw

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Table A-8 GSV Data Format

Name Example

Units

Description

Message ID

$GPGSV

GSV protocol header

Number of Messages

2

Range 1 to 3

Message Number

1

Range 1 to 3

Satellites in View

07

Range 1 to 12

Satellite ID

07

Channel 1 (Range 1 to 32)

Elevation

79

degrees Channel 1 (Maximum 90)

Azimuth

048

degrees Channel 1 (True, Range 0 to 359)

SNR (C/No)

42

dBHz

Range 0 to 99, null when not tracking

.... ....

Satellite ID

27

Channel 4 (Range 1 to 32)

Elevation

27

degrees Channel 4 (Maximum 90)

Azimuth

138

degrees Channel 4 (True, Range 0 to 359)

SNR (C/No)

42

dBHz

Range 0 to 99, null when not tracking

Checksum *71

<CR> <LF>

End of message termination


NOTE: Items <4>,<5>,<6> and <7> repeat for each satellite in view to a maximum of four (4) satellites per
sentence. Additional satellites in view information must be sent in subsequent sentences. These fields will be
null if unused.

A.1.5 Recommended Minimum Specific GNSS Data (RMC)

Table A-9 contains the values for the following example:

$GPRMC,161229.487,A,3723.2475,N,12158.3416,W,0.13,309.62,120598, ,*10

Table A-9 RMC Data Format

Name Example

Units

Description

Message ID

$GPRMC

RMC protocol header

UTC Time

161229.487

hhmmss.sss

Status

A

A=data valid or V=data not valid

Latitude 3723.2475

ddmm.mmmm

N/S Indicator

N

N=north or S=south

Longitude 12158.3416

dddmm.mmmm

E/W Indicator

W

E=east or W=west

Speed Over Ground

0.13

Knots

Course Over Ground

309.62

Degrees True

Date 120598

ddmmyy

Magnetic Variation (1)

Degrees E=east or W=west

Checksum *10

<CR> <LF>

End of message termination


(1) SiRF Technology Inc. does not support magnetic declination. All “course over ground” data are
geodetic WGS84 directions.


A.1.6 Course Over Ground and Ground Speed


Table A-10 contains the values for the following example:

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

Table A-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

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