Query about precision with Galileo HAS on LG290p

IoT Modules GNSS Module
1

Query about precision with Galileo HAS on LG290p

I’m testing version 06 test with Galileo HAS capability.
The command to configure Galileo HAS is as follows:
$PQTMCFGPPP,W,2,1,120,0.10,0.15*68
The question is about the precision setting.
The default horizontal precision is 0.10 m.
How do I know if this precision has been reached?
The LG290p only reports float mode in all cases.
Do you have any feedback on this?
Regards

2

Hi amlago

I’m sorry to inform you that the official standard version of the PPP function is still under optimization.

Best regards

3

Hi @jasper
The version 06 PPP I’m using, while beta, is official and provided by Quectel.
I keep adjusting the horizontal and vertical precision values, but I don’t see any difference in the positioning results. It doesn’t seem to affect the quality of the result.
Can your software team confirm this?
Where can I see the instantaneous precision obtained?
The GST messages don’t provide precision based on PPP.

Some articles say it will be available in the last quarter of 2025. It’s already mid-November.
We’d like to hear some concrete news from Quectel.

Regards

4

Hi amlago

I will collect the feedback on the issues and forward it internally, but I am unable to provide you with my suggestions in a timely manner. Because the internal R&D is still being optimized for this function, it recommend you use stardard version to test it when this function after finish development.

Best regards.

5

Hi @amlago

About PPP，The current situation of our latest test version is as follows：

Q1: How can we observe the improvement in accuracy after configuring this instruction?
A: We can only compare the logs obtained when PPP function is enabled and disabled to calculate and compare the accuracy (Also the estimated accuracy can be seen in the PQTMEPE statement or GST).
Q2: After trying all modes, we still couldn’t reach a fixed solution
A: Convergence completion means floating-point solution.
Q3: How can we determine if the current positioning result meets the accuracy threshold required by PPP?
A: There is a PPPNAV message（this version protocol pecification not be archived at this moment), which contains an indication of whether PPP has converged.

Best regards

6

Hi @jasper.
You’ve been very kind to provide all this information.
Regards