Manual
Table Of Contents
- Title
- Contents
- 1 Integration manual structure
- 2 System description
- 3 Receiver functionality
- 3.1 Receiver configuration
- 3.1.1 Changing the receiver configuration
- 3.1.2 Default GNSS configuration
- 3.1.3 Default interface settings
- 3.1.4 Basic receiver configuration
- 3.1.5 Differential timing mode configuration
- 3.1.6 Legacy configuration interface compatibility
- 3.1.7 Navigation configuration
- 3.2 Geofencing
- 3.3 Logging
- 3.4 Communication interfaces
- 3.5 Predefined PIOs
- 3.6 Antenna supervisor
- 3.7 Multiple GNSS assistance (MGA)
- 3.8 Clocks and time
- 3.9 Timing functionality
- 3.10 Security
- 3.11 u-blox protocol feature descriptions
- 3.12 Forcing a receiver reset
- 3.13 Firmware upload
- 3.1 Receiver configuration
- 4 Design
- 5 Product handling
- Appendix
- Related documents
- Revision history
- Contact
ZED-F9T-Integration manual
Figure 25: GLONASS navigation message data
In some circumstances, (especially on startup) the receiver may be able to decode data from a
GLONASS satellite before it can identify it. When this occurs UBX-RXM-SFRBX messages will be
issued with an svId of 255 to indicate "unknown".
3.11.1.4 BeiDou
For BeiDou signals there is a fairly straightforward mapping between the reported subframe and the
structure of subframe and words described in the BeiDou ICD. Each subframe comprises ten data
words, which are reported in the same order they are received.
Each word is arranged as follows:
Figure 26: BeiDou subframe word
Note that as the BeiDou data words only comprise 30 bits, the 2 most significant bits in each word
reported by UBX-RXM-SFRBX are padding and should be ignored.
3.11.1.5 Galileo
The Galileo E1-B and E5b in-phase signals transmit the I/NAV data message but in different
configurations to enhance down-load time for dual frequency recievers. The UBX-RXM-SFRBX
structure for the I/NAV message is shown below.
UBX-19005590 - R05
3 Receiver functionality Page 55 of 87
C1-Public Early production information