iCON gps 60, NMEA Message Formats
100
A.9 GSV - GNSS Satellites in View
Syntax $--GSV,x,x,xx,xx,xx,xxx,xx,.....,h*hh<CR><LF>
Description of
fields
Satellite information can require the transmission of multiple messages, specified by
the total number of messages and the message number.
The fields for the PRN / Slot number, Elevation, Azimuth and SNR form one set. A variable number of these sets are allowed up to a maximum of four sets per message.
Examples Standard Talker ID
$GPGSV,3,1,11,01,55,102,51,11,85,270,50,14,31,049,47,17,21,316,46*7A
$GPGSV,3,2,11,19,31,172,48,20,51,249,50,22,00,061,,23,11,190,42*7E
$GPGSV,3,3,11,24,11,292,43,25,08,114,,28,14,275,44,,,,*45
$GLGSV,2,1,06,65,16,055,42,66,64,025,48,67,46,262,42,68,01,245,*64
$GLGSV,2,2,06,81,52,197,47,83,07,335,,,,,,,,,*68
User-defined Talker ID = GN
$GNGSV,3,1,10,01,55,100,51,11,86,263,50,14,31,049,47,17,22,316,46*65
$GNGSV,3,2,10,19,30,172,48,20,52,249,51,23,12,190,42,24,12,292,42*6C
$GNGSV,3,3,10,25,09,114,,28,14,274,44,,,,,,,,*62
Field Description
$--GSV Header including talker ID
x Total number of messages, 1 to 4
x Message number, 1 to 4
xx Number of theoretically visible satellites according to the current
almanac.
xx PRN (GPS) / Slot (GLONASS) number of satellite
xx Elevation in degrees, 90 maximum, empty when not tracking
xxx Azimuth in degrees true north, 000 to 359, empty when not tracking
xx Signal to Noise Ration C/No in dB, 00 to 99 of L1 signal, null field when
not tracking.
... Repeat set PRN / Slot number, elevation, azimuth and SNR up to four
times
*hh Checksum
<CR> Carriage Return
<LF> Line Feed