RTK: NTRIP Corrections

[Naterater]

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Expected Behavior

I want to be able to access RTK corrections from my NTRIP provider. Mission Planner allows me to do this, however I see nothing about NTRIP in QGC.

Current Behavior

Unavailable

Steps to Reproduce:

N/A

Detailed Description

I believe Mission Planner's code utilizing NTRIP is here: https://github.com/ArduPilot/MissionPlanner/blob/b26324bdc7e9abd87eb7e9c02bfc11f7184a9a51/ExtLibs/Comms/CommsNTRIP.cs

[dogmaphobic]

Is the data provided by an NTRIP server the same you get from a regular RTK base? (sorry, I briefly looked up NTRIP and got lost rather quickly with the cacophony of mud like explanations).

[highfreq]

Would it be possible to add ntrip corrections from an internet server (we have subscroption) and inject it trough mavlink? Basically same as MP

[maxhofidrone]

Hi, are there any news of this feature? I would be very interested for using data of a NTRIP server and QGC?

[bys1123]

I saw few Chinese survey drone company need this feature too.

[AlexKlimaj]

I would also like to see this implemented

[ChinaMan28]

Implementing this would literally change the UAS Mapping/Survey industry. I to support this.

[KnightHawk06]

Any movement on this ticket? Would be very useful to be able to connect to remote RTK via NTRIP in QGC. https://www.u-blox.com/en/product/u-center currently supports this.

[AlexKlimaj]

Not quite the same thing, but we made a client that receives corrections via the Point1 Polaris service and publishes them to a mavlink router connection.

https://github.com/ARK-Electronics/polaris-client-mavlink

[KnightHawk06]

@AlexKlimaj Thanks for pointing me to the client. I was able to get it setup but I'm having issues connecting.

mavlink-routerd -e 127.0.0.1:14550 -e 127.0.0.1:14551 -e 127.0.0.1:14552 /dev/ttyUSB0:57600

I've started mavlink-router forwarding the 3 ports that I'm connected to, I am able to connect to 14550 and 14551 but not 14552.

./build/polaris-client-mavlink Waiting for MAVSDK connection: 127.0.0.1:14552

This is with QGC v4.3 on Ubuntu 22.04

Any ideas? I have been able to connect to my Polaris account in ucenter with my login credentials, there's not anything else needed to connect to the api key is there?

[AlexKlimaj]

Where is mavlink router running and where is polaris running? Also 57600 baud is likely too low.

[KnightHawk06]

Mavlink router, Polaris and QGC are all running on the same Ubuntu box pointing to the local host (127.0.0.1)

I'll try a higher data rate.

[KnightHawk06]

I tried updating the RFD 900x-US radio settings to connect at 115200 and 460800 but I'm not able to get QGC to connect via UDP to mavlink-router at those rates for some reason, it will only connect at 57600.

Are there any logs that I can look at? I'm only seeing this message below from the polaris client.

Waiting for MAVSDK connection: 127.0.0.1:14552

It looks like I'm connected to the port in QGC and I see some message content using netstat.

[KnightHawk06]

I was able to get QGC to connect at 115200, you have to update SER_TEL1_BAUD to 115200 if you update the baud rate on the radios. (assuming you're connected to TEL1).

[AlexKlimaj]

So QGC should connect to port 14550 and polaris should connect to 14552.

[KnightHawk06]

Correct, QGC is connecting on 14550 but Polaris just prints the "waiting for MAVSDK connection" message

[KnightHawk06]

I created a branch to implement NTRIP in QGC but I am having some issues if anyone is able to review.

1. I have to hardcode the GGA message, I cannot access the attached vehicle LLA data
2. I have not yet fully tested the use of SPARTN messages.

https://github.com/mavlink/qgroundcontrol/pull/13361