Signal Tracking record
The Signal Tracking record enables signal tracking (with bit 0) and sets the method of signal tracking with additional bits as described in the Signal Tracking table below. Most signals have only a single valid tracking method. Users should query the current or default tracking method and then only change bit 0 to enable or disable signals. The GPS L2E and GLONASS L2P signals utilize the fallback setting to switch between “or” verses “and” tracking shown in the web UI, “or” is generally recommended.
The following table shows the additional records provided when the signal tracking record is included with Command Packet 64h.
|
Byte |
Item |
Type |
Value |
Notes |
|---|---|---|---|---|
|
0 |
RECORD TYPE |
1 (Char) |
4Ch |
Signal Tracking record |
|
1 |
RECORD LENGTH |
1 (Char) |
|
Number of bytes in record, excluding bytes 0 and 1 |
|
2–3 |
GPS L1 C/A Tracking |
U16 |
|
|
|
4–5 |
GPS L1C Tracking |
U16 |
|
|
|
6–7 |
RESERVED |
|
|
|
|
8–9 |
GPS L2E (legacy) Tracking |
U16 |
|
|
|
10–11 |
GPS L2C (civil signal) Tracking |
U16 |
|
|
|
12–13 |
GPS L5 Tracking |
U16 |
|
|
|
14–15 |
GLONASS L1 C/A Tracking |
U16 |
|
|
|
16–17 |
GLONASS L1 P Tracking |
U16 |
|
|
|
18–19 |
GLONASS L2 C/A Tracking |
U16 |
|
|
|
20–21 |
GLONASS L2 P Tracking |
U16 |
|
|
|
22–23 |
Galileo E1 Tracking |
U16 |
|
|
|
24–25 |
Galileo E5-A Tracking |
U16 |
|
|
|
26–27 |
Galileo E5-B Tracking |
U16 |
|
|
|
28–29 |
Galileo E5AltBOC Tracking |
U16 |
|
|
|
30–31 |
BeiDou B1 Tracking |
U16 |
|
|
|
32–33 |
BeiDou B2 Tracking |
U16 |
|
|
|
34–35 |
BeiDou B3 Tracking |
U16 |
|
|
|
36–37 |
QZSS L1 C/A Tracking |
U16 |
|
|
|
38–39 |
QZSS L1S (SLAS) Tracking |
U16 |
|
|
|
40–41 |
QZSS L1C Tracking |
U16 |
|
|
|
42–43 |
QZSS L2C Tracking |
U16 |
|
|
|
44–45 |
QZSS L5 Tracking |
U16 |
|
|
|
46–47 |
QZSS L6 Tracking |
U16 |
|
L6D + L6E uses additional channels for L6E, limiting channels available for all QZSS L6 SV tracking, thus it is not the default. |
|
48–49 |
GLONASS L3 Tracking |
U16 |
|
|
|
50–51 |
Galileo E6 Tracking |
U16 |
|
|
|
52–53 |
NavIC L5 C/A Tracking |
U16 |
|
|
|
54–55 |
NavIC S1 C/A Tracking |
U16 |
|
|
|
56–109 |
RESERVED |
|
|
|
|
110–111 |
BeiDou B1C Tracking |
U16 |
|
|
|
112–113 |
BeiDou B2A Tracking |
|
|
|
|
114–115 |
RESERVED |
|
|
|
|
116–117 |
RESERVED |
|
|
|
|
118–119 |
Band Selection |
U16 |
|
Only for the BD9250 receiver module:
|
|
120–121 |
BeiDou B2B Tracking |
U16 |
|
|
|
122–123 |
RESERVED |
|
|
|
Signal Tracking values
The following table provides byte values for tracking configurations. Users should query the current or default tracking method and then only change bit 0 to enable or disable signals.
|
Bit |
Function |
Notes |
|---|---|---|
|
0 |
Tracking ON |
This bit may be switched to turn tracking on/off |
|
1 |
Data or I or CM |
|
|
2 |
Pilot or Q or CL |
|
|
3 |
MBOC |
|
|
4 |
AltBOC full |
|
|
5 |
Fallback |
When L2C tracking is not available for a satellite, it will fallback to L2E tracking |