Multitech MTCMR-E1 Manual de usuario descargar pdf (Pagina 105)

Part 6 – AT Commands for GPS-Enabled Device

Universal IP AT Commands Reference Guide 105

GSV – GNSS Satellites in View

Number of satellites (SV) in view, satellite ID numbers, elevation, azimuth, and SNR value. Four satellites

maximum per transmission.

Structure: $GPGSV,x,x,xx,xx,xx,xxx,xx,…,xx,xx,xxx,xx *hh<CR><LF>

Example: $GPGSV,3,1,12,05,54,069,45,12,44,061,44,21,07,184,46,22,78,289,47*72<CR><LF>

$GPGSV,3,2,12,30,65,118,45,09,12,047,37,18,62,157,47,06,08,144,45*7C<CR><LF>

$GPGSV,3,3,12,14,39,330,42,01,06,299,38,31,30,256,44,32,36,320,47*7B<CR><LF>

Name

Example

Description

Message ID

$GPGSV

GSV Protocol Header

Number of messages

Total number of GSV messages to be transmitted in this group (1-

Message Number

Message number in this group of GSV messages

Satellites in View

Total number of satellites in view (00 ~ 12)

Satellite ID

Satellite ID number, GPS: 01 ~ 32, SBAS: 33 ~ 64 (33 = PRN120)

Elevation

Satellite elevation in degrees, (00 ~ 90)

Azimuth

069

Satellite azimuth angle in degrees, (000 ~ 359 )

SNR

C/No in dB (00 ~ 99). Null when not tracking

12,44,061,44,2

1,07,184,46,22

,78,289,47

Next Satellite ID number, elevation, azimuth, SNR

Last Satellite ID number, elevation, azimuth, SNR

Checksum

*72

End of message (termination)

Depending on the number of satellites tracked, multiple messages of GSV data may be required. In some

software versions, the maximum number of satellites reported as visible is limited to 12, even though more may

be visible.

RMC – Recommended Minimum Specific GNSS Data

Time, date, position, course and speed data provided by a GNSS navigation receiver.

Structure: $GPRMC,hhmmss.sss,A,dddmm.mmmm,a,dddmm.mmmm,a,x.x,x.x,ddmmyy,,,a*hh<CR><LF>

Example: $GPRMC,111636.932,A,2447.0949,N,12100.5223,E,000.0,000.0,030407,,,A*61<CR><LF>

Name

Example

Description

Message ID

$GPRMC

RMC Protocol Header

UTC time

111636.932

UTC of position in hhmmss.sss format (000000.00 ~ 235959.999)

Status

Status: 'V’ = Navigation receiver warning; ‘A’ = Data Valid

Latitude

2447.0949

Latitude in dddmm.mmmm format d

N/S indicator

Latitude hemisphere indicator: ‘N’ = North, ‘S’ = South

Longitude

12100.5223

Longitude in dddmm.mmmm format

E/W Indicator

Longitude hemisphere indicator: 'E' = East, 'W' = West

Speed over ground

000.0

Speed over ground in knots (000.0 ~ 999.9)

Course over ground

000.0

Course over ground in degrees (000.0 ~ 359.9)

UTC Date

030407

UTC date of position fix, ddmmyy format

Magnetic variation, degrees

East or West

Mode indicator

‘N’ = Data not valid

‘A’ = Autonomous mode

‘D’ = Differential mode

‘E’ = Estimated (dead reckoning) mode

‘M’ = Manual input mode

‘S’ = Simulator mode

Checksum

*61

End of message (termination)

1 2 ... 100 101 102 103 104 105 106 107 108 109 110 ... 118 119

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