u-blox ZED-F9P - UBX-NAV-SIG (0 X01 0 X43)

u-blox ZED-F9P Interface Description - Manual
Advance Information
5.14.15 UBX-NAV-SIG (0x01 0x43)
5.14.15.1 Signal Information
Message
UBX-NAV-SIG
Description
Signal Information
Firmware
Supported on:
• u-blox 9 with protocol version 27
Type
Periodic/Polled
Comment
This message displays information about signals currently tracked by the receiver.
On the F9 platform the maximum number of signals is 120.
Header Class ID Length (Bytes) Payload Checksum
Message Structure
0xB5 0x62 0x01 0x43 8 + 16*numSigs
see below
CK_A CK_B
Payload Contents:
Byte Offset Number
Format
Scaling Name Unit Description
0 U4 - iTOW ms GPS time of week of the navigation epoch.
See the description of iTOW for details.
4 U1 - version - Message version (0x00 for this version)
5 U1 - numSigs - Number of signals
6 U1[2] - reserved1 - Reserved
Start of repeated block (numSigs times)
8 + 16*N U1 - gnssId - GNSS identifier (see Satellite Numbering) for
assignment
9 + 16*N U1 - svId - Satellite identifier (see Satellite Numbering) for
assignment
10 + 16*N U1 - sigId - New style signal identifier (see Signal Identifiers)
11 + 16*N U1 - freqId - Only used for GLONASS: This is the frequency
slot + 7 (range from 0 to 13)
12 + 16*N I2 0.1 prRes m Pseudorange residual
14 + 16*N U1 - cno dBHz Carrier-to-noise density ratio (signal strength)
15 + 16*N U1 - qualityInd - Signal quality indicator:
0: no signal
1: searching signal
2: signal acquired
3: signal detected but unusable
4: code locked and time synchronized
5, 6, 7: code and carrier locked and time
synchronized
Note: Since IMES signals are not time
synchronized, a channel tracking an IMES signal
can never reach a quality indicator value of
higher than 3.
UBX-18010854 - R04 Advance Information Page 157 of 259