Spectra Precision ProMark 800 Reference Manual - Manual (Page 326)

314
Query Command Library
GSV: GNSS Satellites in View
Function This command is used to output a GSV message containing
information on the satellites in view.
Command Format Syntax
$PASHQ,GSV[*cc]
Response Format Syntax
$--GSV,d1,d2,d3,n(d4,d5,d6,f7)*cc
The set of parameters (d4,d5,d6,f7) can be repeated up to 4
times in a single response line, corresponding to the
description of 4 different satellites. The number of response
lines is therefore dependent on the number of satellites in
view (e.g. three response lines if between 9 and 12 satellites
are visible).
Parameters
GPS PRN number is d4
SBAS PRN number is d4+87
GLONASS slot number is d4-64
GALILEO PRN number is d4-96
QZSS PRN number is d4-192
Parameter Description Range
“$--GSV”
Header
$GPGSV: GPS and SBAS satellites.
$GLGSV: GLONASS satellites
$GAGSV: GALILEO satellites $GPGSV,
$GLGSV
$GAGSV
d1 Total number of messages 1-4
d2 Message number 1-4
d3 Total number of satellites in view 1-15
d4 Satellite PRN
GPS: 1-32
GLONASS: 65-96
SBAS: 33-64
GALILEO: 97-126
GIOVE-A/B: 127-128
QZSS: 193-197
d5 Elevation in degrees 0-90
d6 Azimuth in degrees 0-359
f7 SNR in dB.Hz 30.0-60.0
*cc Checksum *00-*FF