u-blox ZED-F9P Interface Description - Manual
Advance Information
Appendix
A Satellite Numbering
A summary of all the SV numbering schemes is provided in the following table.
Satellite numbering
GNSS Type SV range UBX gnssId:svId UBX svId NMEA 2.X-4.
0 (strict)
NMEA 2.X-4.0
(extended)
NMEA 4.1+
(strict)
NMEA 4.1+
(extended)
GPS G1-G32 0:1-32 1-32 1-32 1-32 1-32 1-32
SBAS S120-S158 1:120-158 120-158 33-64 33-64,152-158 33-64 33-64,152-158
Galileo E1-E36 2:1-36 211-246 - 301-336 1-36 1-36
BeiDou B1-B37 3:1-37 159-163,33-64 - 401-437 1-37 1-37
QZSS Q1-Q5 5:1-5 193-197 - 193-197 - 193-197
GLONASS R1-R32, R? 6:1-32, 6:255 65-96, 255 65-96, null 65-96, null 65-96, null 65-96, null
B UBX and NMEA Signal Identifiers
UBX and NMEA protocols uses signal identifiers (commonly abbreviated to "sigId") to distinguish between
different signals from GNSS.
Signal identifiers are only valid when combined with a GNSS identifier (see above). The table below shows the
range of identifiers currently supported in the firmware.
The following table shows the mapping of GNSS signals to UBX / NMEA signal identifier.
Signal Identifiers
Signal name UBX gnssId UBX sigId NMEA 4.1+ gnssId NMEA 4.1+ sigId
GPS L1C/A* 0 0 1 1
GPS L2 CL 0 3 1 6
GPS L2 CM 0 4 1 5
Galileo E1 C* 2 0 3 7
Galileo E1 B* 2 1 3 7
Galileo E5 bI 2 5 3 2
Galileo E5 bQ 2 6 3 2
BeiDou B1I D1* 3 0 4** 1**
BeiDou B1I D2* 3 1 4** 1**
BeiDou B2I D1 3 2 4** 3**
BeiDou B2I D2 3 3 4** 3**
QZSS L1C/A* 5 0
GLONASS L1 OF* 6 0 2 1
GLONASS L2 OF 6 2 2 3
UBX messages, that don't have an explicit sigId field, contain information about the subset of signals marked
with (*).
BeiDou gnssId and sigId are not defined in the NMEA protocol version 4.1, values shown in the table are valid
for u-blox products only (**).
UBX-18010854 - R04 Advance Information Page 239 of 259
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