NO local position

#1

I test fly used RTK.But I have some quesion that I can’t understand.PX4 prompts for some log.“Failsafe enabled:no local position”.And the leds of GPS module will turn blue.When I have land,led turn green.At the same time,GPS stream is 5HZ to FC.How do I solve that? V1.8.0/1.8.2 and pixhawk 4

#3

I think you need to share at least a log for us to have a chance to find out what is going on.

#4

this is a good idea,I will do that

#6

https://logs.px4.io/plot_app?log=242cd5c5-95ed-4afe-9a5c-cdee0d08ed1e

#7

Thanks for sharing. I’m not sure why this happens. Which RTK GPS are you using?

@bkueng do you see anything?

#8

Hmm no, the GPS signal looks good.
Can you try with latest master (or v1.9.0 beta 3)?

#9

I have not try 1.9.0.

#10

I think it is an rtk data problem that causes the ekf innovation value to be too large.

#11

But it only shows this phenomenon when it is in special line and special heading.Sometime,fix_type is keep rtk-fix.