100% single solution. Why no FIX?

Emlid Studio Stop & Go with Emlid Flow
1

Hi all,

I’ve read all the other topics on this case but still can’t figure out why I have a SINGLE solution only.
I was measuring GCP’s in a quarry and did a drone flight afterwards. I couldn’t get a RTK service working so i thought “i’m just gonna avarage each point for 10 seconds and do PPK afterwards”.
I downloaded the observations from the closest base station to my measurements. Baseline is between 16 to 18km. Put everything in Emlid Studio but i get 100% SINGLE as a result…

Can someone tell me what I am doing wrong?
Could it be the fact that I am averaging not long enough?
I put all the necessary files in this folder: PPK emlid studio - Google Drive

Thank you for your help! I hope I wont have to start the mission over again!

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First thing I would check if this happened to me would be if I made a mistake with temporal overlap of the base’s files. That’s common when dealing with UTC VS local time.

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Try editing the point start and point stop times in the csv so your collection time is at least 30 seconds (or 60 seconds) and reprocess in Emlid Studio.

If that doesn’t work, then check you’ve got the right time overlap for the CORS logs - the change to summer time/winter time can sometimes confuse you into picking he wrong CORS log files.

hth

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Hi, I took a quick look into your files using Emlid Studio and it appears to me that your Base and Rover timelines do not overlap like the previous members had suspected.
Base = 08 May 2025 08:00:00 - 16:59:59 (GPST)
Rover = 06 May 2025 09:18:02 - 14:22:16 (GPST)

I would download the appropriate Base data and try again.
Though you definitely have some noise going on in your Rover data that might effect your results when you reprocess the data.

Emlid Forum_arnaud.Irc_100% single solution_Why no FIX_Base Station Logs-recherche_1-aaer128z.25o_Satellite Visibility
Emlid Forum_arnaud.Irc_100% single solution_Why no FIX_Base Station Logs-recherche_1-aaer128z.25o_Satellite Visibility1159×1081 86.6 KB

Emlid Forum_arnaud.Irc_100% single solution_Rover Emlid RS3 logs_AgriflightR_raw_20250506091732.25O_Satellite Visibility
Emlid Forum_arnaud.Irc_100% single solution_Rover Emlid RS3 logs_AgriflightR_raw_20250506091732.25O_Satellite Visibility1147×1078 233 KB

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You are correct! Thank you!! I understand now what went wrong. I had to manually refresh the website for the date to change. Otherwise it would tell me “do you want to download rinex data for the 6th of may?” while still downloading data for the 8th of may… very bizarre. These websites are not always easy to use…

Thank you for your help yall

1 Like
8

Hi @arnaud.lrc,

Welcome to the community forum!

I recreated the issue on my end, and found out that the base and rover timelines do not overlap, which is why you are getting Single solution, just as @mark1st.john pointed out. I’d recommend downloading the base data again and giving it another shot.

Thank you everyone for sharing your inputs.