GNSS RTK with mp2128g2

Hello Boonsarm,

The autopilot allows you to configure a UART for an external GPS receiver.

If you use a GPS receiver that supports RTK you can use our DGPS plugin to send corrections from a base GPS to the remote GPS for RTK.

We support compatible units from Ublox (for example the M8P RTK capable GPS receiver), Novatel (such as the OEM 617D or OEM 615), Trimble (such as the BD920), and more.

The DGPS plugin manual has details on setting that up for a base GPS receiver, and we have a Novatel Integration guide that covers Novatel setup that would also apply partially to other GPS types.

In summary:

Set up a UART in the Comms tab of the VRS Editor for the External GPS protocol. Configure the settings for that UART so it can communicate with your GPS receiver.

Then in the GPS tab of the VRS Editor select the GPS type you are using, the baud rate, fix rate, and other settings that you want to apply to the GPS receiver.

The airborne GPS receiver should be able to get a normal GPS lock with the autopilot when tested at this point.

Then you can configure the DGPS plugin's comm settings so it can communicate with the base GPS receiver. Lastly, configure the GPS base's position and GPS correction type to match the corrections the GPS receivers use.

When configured and connected to Horizon, the DGPS plugin will send corrections from the base GPS receiver to the remote GPS receiver through the data link. The DGPS plugin will indicate the current precision of the GPS fix.

Evan Schellenberg
MicroPilot Support

Replies

Evan Schellenberg May 24, 2018 at 3:22am

Hello Boonsarm,

To use RTK with the M8 and other newer models of the Ublox receivers you would need a newer version of Horizon. Then you can get the latest NMEA and Ublox protocols in the autopilot and the latest DGPS plugin correction types.

You can contact info@micropilot.com to talk to someone about renewing extended technical support which will renew support site access.

Evan Schellenberg

Micropilot Support
Evan Schellenberg April 24, 2018 at 6:08am

Hello Boonsarm,

The autopilot allows you to configure a UART for an external GPS receiver.

If you use a GPS receiver that supports RTK you can use our DGPS plugin to send corrections from a base GPS to the remote GPS for RTK.

We support compatible units from Ublox (for example the M8P RTK capable GPS receiver), Novatel (such as the OEM 617D or OEM 615), Trimble (such as the BD920), and more.

The DGPS plugin manual has details on setting that up for a base GPS receiver, and we have a Novatel Integration guide that covers Novatel setup that would also apply partially to other GPS types.

In summary:

Set up a UART in the Comms tab of the VRS Editor for the External GPS protocol. Configure the settings for that UART so it can communicate with your GPS receiver.

Then in the GPS tab of the VRS Editor select the GPS type you are using, the baud rate, fix rate, and other settings that you want to apply to the GPS receiver.

The airborne GPS receiver should be able to get a normal GPS lock with the autopilot when tested at this point.

Then you can configure the DGPS plugin's comm settings so it can communicate with the base GPS receiver. Lastly, configure the GPS base's position and GPS correction type to match the corrections the GPS receivers use.

When configured and connected to Horizon, the DGPS plugin will send corrections from the base GPS receiver to the remote GPS receiver through the data link. The DGPS plugin will indicate the current precision of the GPS fix.

Evan Schellenberg
MicroPilot Support

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