Data Logs
Appendix C
SPAN-SE User Manual Rev 1
203
Field
Structure
Field Description
Symbol
Example
1
$GPGSV
Log header
$GPGSV
2
# msgs
Total number of messages (1-9)
x
3
3
msg #
Message number (1-9)
x
1
4
# sats
Total number of satellites in view. May be different
than the number of satellites in use (see also the
).
xx
09
5
prn
Satellite PRN number
GPS
= 1 to 32
SBAS = 33 to 64 (add 87 for PRN#s)
GLO
= 65 to 96
1
xx
03
6
elev
Elevation, degrees, 90 maximum
xx
51
7
azimuth
Azimuth, degrees True, 000 to 359
xxx
140
8
SNR
SNR (C/No) 00-99 dB, null when not tracking
xx
42
...
...
...
...
...
...
Next satellite PRN number, elev, azimuth, SNR,
...
Last satellite PRN number, elev, azimuth, SNR,
variable
*xx
Checksum
*hh
*72
variable
[CR][LF]
Sentence terminator
[CR][LF]
1. The NMEA GLONASS PRN numbers are 64 plus the GLONASS slot number. Current slot
numbers are 1 to 24 which give the range 65 to 88. PRN numbers 89 to 96 are available if slot
numbers above 24 are allocated to on-orbit spares.
