Hi,
After upgrading to pixhawk4 with F9P GNSS model, I had a lot of GPS glitches.
Trying to solve the problem, as few suggested, I tried to reduce the F9P’s constellations. But unexpectedly with the fewer constellations I got more GPA.delta spikes.
all constellations:
only GPS+Galileo:
why is it happening? and what can I do to avoid those GPA.delta values?
Hello, do you finding the cause?
The infrequent spikes might not be a problem. The GPA Delta would be bad if it was consistently less than 200ms.
I think those graphs above are showing a time span of about 1 hour, so that’s nothing to worry about at all.
Having ruled out GPA Delta, you would next look to number of sats and HDOP - being consistent and reliable.
How did you find GPA.Delta? I am unable to find it in my list of GPA params? APM version is 3.5.5 so that could be the issue - Thanks!
APM is no longer supported. No surprise you aren’t finding log entry names from versions nearly a decade newer…
Wish I could. This is for an large fleet of drones where this is the conformed COTS configuration. Attempted upgrades have not had good results.
Attempting to troubleshoot some bad F9P dropouts on 1 of perhaps 400 flights and the log file I have is the log file I have. Just looking for confirmation that GPA.Delta is either 1) not possible to retrieve or 2) possible but maybe not a standard way to find it. Thanks so much.
