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Dual GNSS Receiver


When connecting to the receivers' USB-C port for configuration, please make sure that both of the Dual Receiver Board sensor cables are detached from the SentiBoard, or that the SentiBoard is not powered (either by USB or external power).

The SentiSystems Dual GNSS Receiver consists of two uBlox ZED-F9P receivers, interconnected such that one receiver can act as a Rover, and the other receiver act as a Moving Base. By having the Moving Base receiver send the Rover receiver RTK correction data, the Rover is able to calculate its antenna's relative position to the Moving Base antenna down to centimeter acuraccy.

Dual GNSS Receiver Breakout Board

Receiver configuration

The default configuration for each receiver can be found in the SharePoint folder under configs/dual_receivers/rover.txt and configs/dual_receivers/moving_base.txt.


For some useful information and recommendations when configuring the receivers, please read the Configuration page. See the Recommended Configuration page for our default Rover and Moving Base set-up.

If you like to make any changes to the receiver configurations, you can use the USB-C connectors located on the side of the Dual GNSS Receiver Board, connect it to your computer, and use your favorite uBlox configuration tool (e.g u-center).

Enabling RTK for Moving Base

To enable the Moving Base receiver to acquire RTK fix, you will need to send RTK correction data (RTCM3) to the receiver. On the receiver board you will find a 2-pin connector marked uBlox1 RX2, which can be used to feed the corrections to the receiver.


When you connect to the uBlox1 RX2 connector, please make sure to remove the JP7 resistor on your dual receiver board.



For the current version of the Dual GNSS Receiver Board, TX and RX have switched places on the sensor ports. Hence, if you need to make new sensor connector cables, make sure to change RX with TX according to the schematic.