I was mapping (flying) last Thursday (01/24/19) during a periode with a high kp index.
I could notice it because the uav was doing strange things when the rtk solution was lost (I first thought that it was a compass problem). Unfortunately I could not postpone the flight and cannot repeat it.
Is there any chance/best practice to rescue the observations?
yes, I can provide some of the base and the rover ubx files. The thing is so bad that I’m even missing 158 events where no solution at all is calculated.
It is a hexacopter, numerous flights, flight speeds between 3 and 8 m/s. I try to reduce the post processing time by producing one single ubx file. The file contains 100, 60 an 30 m cross pattern flights.
That’s a tough nut. The data has sooo many cycle slips, I’m surprised it will give any fixed solutions at all.
Even precise orbits and clocks doesn’t help.
Do you have a picture of your Reach M+ (?) antenna setup ?
Was the base data collected using a Reach RS(+) ?
I agree that KP index go high, but especially on GLONASS they are not interferred at the same time, always, which I find wierd.
Edit: Looking at this Euref station 30 km away it has almost no cycleslips in the same timespan.
Was there heavy machinery operating near by or something similar?
The data was collected with first generation Reach receivers. The antenna setup is suboptimal but did work for more than 1.500 ha last year. I also think it is hard to believe that it is a setup problem when all differently mounted receivers have a problem. The problem is also less significant at the end of the day.
I have had a look at some observation files I have:
The kp-data does not really support my thesis with high kp-values beeing the source of the problem:
I hope that my units are not damaged but that I discovered some BND activity (our not so funny and not so intelligent intelligence service ;-)).
Or may be it was a temperature problem? Around 0°C might probably be too “much”?
There was no machinery near by. I don’t know whether any signals for ships etc. cause such interferences?
Or have you or has anyone experienced same problems during periods with high kp-index?
When I look at a lot of my observation files I could get the impression that my units are getting worse. I hope thta is only the winter depression… .