simpleRTK3B Heading – What communication protocol is used?

Q&A forumCategory: QuestionssimpleRTK3B Heading – What communication protocol is used?
amorosik asked 2 years ago
For position and heading outputs, is the Nmea protocol or a proprietary system used?
Ardusimple
Staff replied 2 years ago

NMEA. Following messages are supported:

ALM
DTM
GBS
GGA
GLL
GNS
GRS
GSA
GST
GSV
HDT
RMC
ROT
VTG
ZDA
HRP
LLQ
RBP
RBV
RBD
AVR
GGK
GFA
GGQ
LLK
GMP
TFM
SNC
THS

balint.vanek
replied 2 years ago

Are there any supported methods / software to log SBF stream from the mosaic HAT?

Ardusimple
Staff replied 2 years ago

You can use RxTools: https://www.septentrio.com/en/products/software/rxtools

balint.vanek
replied 2 years ago

Thanks, I want to use it onboard a drone, so I do not know if the Linux version of RxTools is available for raspbian / RPi4

Ardusimple
Staff replied 2 years ago

You don’t need RxTools then. You can do datalogging by simply recording a file from the data stream coming from the interface that you use (USB or UART). Then on a PC you can replay this log with RxTools.

Math
replied 2 years ago

Hello,

To be sure to understand, the heading data from dual antenna of simpleRTK3B Heading is available directly into the NMEA string, like HDT or VTG strings (contrary to simpleRTK2B+heading for which heading data of dual antenna was only available into U-Blox UBX-NAV-RELPOSNED string) ?

For the attitude data (roll or pitch depending how antenna are positionned), how are they provided ? Can we configure into the board the height and position of antennas, and the board provide a position compensated from roll (or tilt), in NMEA strings ?

I try to obtain the datasheet of the module here: https://www.septentrio.com/en/products/gnss-receivers/rover-base-receivers/receivers-modules/mosaic-h but I only obtain a 2 page commercial document.
Is there a datasheet available somewhere ?

Thank,

Math

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