GSV – Satellites in view
MUT100072E1R3 — 02 – 2019
19
NMEA MESSA
GE FORMA
T
4.6
GSV – Satellites in view
Number of satellites in view, satellite ID (PRN) numbers, elevation, azimuth and SNR value.
The information for four satellites is a maximum per one message, additional messages up to maximum of eight
are sent if need.
The satellites are in PRN number order.
Before a position fix is acquired the information contains only the SNR value. After a fix is acquired, also the eleva-
tion and azimuth angles are added.
Note that there can be also «theoretical» satellites in the GSV message. These are satellites of which the angles (el-
evation and azimuth) are known but for some reason (due to an obstruction for example) have not been found. In
this case the SNR value is set to zero (Red characters in the example below).
Please notice that as all the satellites that in the view are reported, the amount of satellites may occasionally be
more than the number of receiver tracking channels, 12.
Syntax:
$GPGSV,n,m,ss,xx,ee,aaa,cn,…………. ,xx,ee,aaa,cn*hh<CR><LF>
Example:
$GPGSV,4,1,14,03,66,207,50,08,09,322,44,11,01,266,42,
14,00,155,00
*79
$GPGSV,4,2,14,15,41,088,48,17,21,083,44,18,57,087,51,21,57,173,50*78
$GPGSV,4,3,14,
22,05,203,00
,23,52,074,49,26,17,028,44,
27,00,300,00
*79
$GPGSV,4,4,14,
28,32,243,00
,
31,48,286,00
*70
In this example, 14 satellites view and/or predicted but only 9 satellites really tracked.
Position Parameter
Format
Designation / Units
1
n
Total number of messages, 1 to 9
2
m
Message number, 1 to 9
3
ss
Total number of satellites in view
4, 8, 12 and 16
xx
Satellite ID (PRN) number
5, 9, 13 and 17
ee
Satellite elevation, degrees 90 max
6, 10, 14 and 18
aaa
Satellite azimuth, degrees True, 000 to 359
7, 11, 15 and 19
ch
Signal-to-noise ration (C/No) 00-99 dB-Hz. Value of zero means that the sat-
ellite is predicted to be on the visible sky but it isn't being tracked.
Note:
Each satellite view or predicted has a data package with the following format: xx,ee,aaa,ch
Satellite data package
Summary of Contents for GPS
Page 1: ...GNSS Receiver Module User s Manual Document No MUT100072E1R3 02 2019 GPS...
Page 4: ...ii GPS User s Manual TABLE OF CONTENT 7 3 Service 27 8 GLOSSARY 29...
Page 18: ...14 GPS User s Manual Quicklook T H I S P A G E I S I N T E N T I O N A L L Y B L A N K...
Page 28: ...24 GPS User s Manual RF connector T H I S P A G E I S I N T E N T I O N A L L Y B L A N K...
Page 30: ...26 GPS User s Manual T H I S P A G E I S I N T E N T I O N A L L Y B L A N K...
Page 32: ...28 GPS User s Manual Service T H I S P A G E I S I N T E N T I O N A L L Y B L A N K...
Page 35: ...MUT100072E1R3 02 2019 31 Notes...