Message Type 127, $GLGSV

Standard NMEA message containing the number of GLONASS satellites in view, their ID, elevation, azimuth, and SNR value.

Up to four satellites can be contained in a single GSV string so up to three strings are possible to cover up to 12 satellites.

Message format is:

$GLGSV,m,n,vv,i1,e1,a1,s1,i2,e2,a2,s2,i3,e3,a3,s3,i4,e4,a4,s4,*hh<CR><LF>

Where:

m is the total number of GSV messages in this sequence: 1 to 3

n is the sequence number of this message: 1, 2 or 3

vv is the number of satellites in view

i1-4 is the satellite ID

e1-4 is the satellite elevation in degrees (0-90)

a1-4 is the satellite azimuth in degrees true (0-359)

s1 is the satellite SNR in dB-Hz

hh is the message checksum

Example:

$GLGSV,2,1,08,74,80,299,,66,08,352,,73,43,150,,75,25,324,*6C
$GLGSV,2,2,08,84,63,225,,83,58,039,,67,08,037,,85,17,223,*68