GPSM001
OEM GPS Receiver Module
GSV—GNSS Satellites in View
Description: This message reports the satellites in view, their ID numbers, elevation, azimuth, and SNR values (up to
four satellites per message). GSV is described in Table 8.
Name
Message ID
Number of Messages
1
Message Number
1
Satellites in View
Satellite ID
Elevation
Example
$GPGSV
2
1
07
07
79
Units
Description
GSV protocol header
Range 1 to 3
Range 1 to 3
Channel 1 (Range 1 to 32)
Channel 1 (Maximum 90)
degrees
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
1
Depending on the number of satellites tracked multiple messages of GSV data may be required.
Table 8. GGA Data Format
Example: The values reported in this example are interpreted as shown in Table 8. Two messages are require to
complete the data transmission.
$GPGSV,2,1,07,07,79,048,42,02,51,062,43,26,36,256,
42,27,27,138,42*71
$GPGSV,2,2,07,09,23,313,42,04,19,159,41,15,12,041,
42*41
RMC—Recommended Minimum Specific GNSS Data
Description: This message reports the time, date, position, course, and speed from the receiver’s navigation solution.
RMC is described in Table 9.
Name
Message ID
UTC Position
Example
$GPRMC
161229.487
Units
Description
RMC protocol header
Hh mm ss.sss
Status
A
A = data valid or V = data not valid
Latitude
3723.2475
Dd mm.mmmm
N/S Indicator
N
N = north or S = south
Longitude
12158.3416
Ddd mm.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
Dd mm yy
1
degrees
E = east or W = west
Magnetic Variation
Checksum
*10
<CR><LF>
End of message termination
1
All "course over ground" data are geodetic WGS84 directions.
Table 9. RMC Data Format
Example: The values reported in this example are interpreted as shown in Table 9:
$GPRMC,161229.487,A,3723.2475,N,12158.3416,W,0.13,
309.62,120598, ,*10
DS031-2 Jan ‘04
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