PPK with here 3 / here pro or other uavcan GPS

Here GPS
1

Is this possible? So far I have had no luck in saving raw data by setting GPS_RAW_DATA =1.

I see GRAW headers in the log file but no GRAW data. Do I need to do something from u-center?

I saw a post suggesting UAVCAN doesn’t support raw messages:

Perhaps that is the issue. If that is the case it would need a upgrade to UAVCAN to support the raw messages, or any work arounds?

2

F9P does support PPK but HerePro does not support PPK at the current stage.
You will need to wait for the possible further updates.

Also, I don’t think M8P supports PPK unless you do the process by yourself
https://portal.u-blox.com/s/question/0D52p00008HKD7BCAX/if-i-storage-data-of-rover-and-base-with-my-neo-m8p-could-i-do-ppk-post-processing

3

That’s too bad because for many survey applications RTK isn’t really needed as posterior accurate positions are sufficient and RTK is just another failure point if the link drops out etc.

I have been using a an EMLID for PPK and works well, just the integration with the pixhawk is a little less robust, so for the moment will continue will this approach.

Seems the upgrade path to PPK for the HerePro 3 is a bit complex due to UAVCAN limitations so either that would need to be upgraded to support raw gps or a different communication protocol would be required.

Not sure if there is memory in the Here Pro to store the raw GPS data, and a way to get it out.

4

Yes. The upgrade process for Here3 to achieve PPK is complete because this is not a function by design. It’s more like making it work under limited resources.

I would suggest waiting for the further updates on HerePro.