GSV – GNSS Satellites In View
The GSV sentence provides the number of satellites (SV) in view, satellite ID numbers, elevation,
azimuth, and SNR value. The GSV sentence contains four satellites maximum per transmission. The total
number of sentences being transmitted and the sentence number being transmitted are indicated in the first
two fields.
If multiple GPS, GLONASS, Galileo, BDS, QZSS, NavIC (IRNSS) satellites are in view, use separate
GSV sentences with talker ID GP to show the GPS satellites in view, talker GL to show the GLONASS
satellites in view, talker GA to show the Galileo satellites in view, talker GB to show the BDS satellites in
view, talker GQ to show the QZSS satellites, and talker GI to show the NavIC (IRNSS) satellites in view,
etc. When more than one ranging signal is used per satellite, separate GSV sentences with a System ID
corresponding to the ranging signals shall be required. When multiple GSV sentences are necessary, use of
the NMEA TAG Block structure (§ 7) and the TAG Block Sentence-grouping Parameter (§ 7.9.3) reliably
links the related sentences together over any transport medium.
When GSV sentences are provided with related GRS and/or GSA sentences, use of the NMEA TAG
Block structure (§ 7) and the TAG Block Sentence-grouping Parameter (§ 7.9.3) reliably links the related
(different sentence formatters) sentences together over any transport medium.
To reliably identify when the satellites in view were observed a corresponding transmission of the ZDA
sentence is recommended. Use of the NMEA TAG Block structure (§ 7) and the TAG Block Sentence-
grouping Parameter (§ 7.9.3) reliably link the related GSV and ZDA sentences together over any transport
medium.
The GN identifier shall not be used with this sentence.
【NMEA 4.11】
$--GSV,x,x,xx,xx,xx,xxx,xx,.…….……..,xx,xx,xxx,xx,h*hh
【NMEA 4.10】
$--GSV,x,x,xx,xx,xx,xxx,xx,.…….……..,xx,xx,xxx,xx,h*hh
【NMEA 3.01】
$--GSV,x,x,xx,xx,xx,xxx,xx,.…….……..,xx,xx,xxx,xx*hh<LF