Post Processing Survey Points in Emlid Studio (Stop and Go with Emlid Flow PPK)

This video will walk through the process of collecting points in Emlid Flow and post processing them in Emlid Studio to correct their absolute accuracy. 

In this video I will show you how to post process your survey points in Emlid Studio. Before our survey we will need to be logging on both the base and rover. It’s also a good idea to backup source data for RINEX. For this example, I am using an average single solution for my base that I will correct later with an OPUS solution. I will also collect half my points with an RTK fix from my base while the other half will be collected with a single solution. Each point in this data set will mark the northeast corner of the catch basins in this area.  

Over in Flow 360 we can see the points I collected. I’m going to update my aerial imagery with a recent orthomosaic to clearly show that the points do not align with the catch basins. Let’s export this as a CSV so we can correct these points in Emlid Studio. We will also download the logs from our base and rover from the same time that these points were collected. With all our necessary data downloaded, we will open Emlid Studio and navigate to Stop & Go with Emlid Flow. We can then drag and drop the necessary RINEX files from the respective receivers or grab the ubx backup and drop those in for the base and rover.  

Now I will change the base coordinate from what was stored in the RINEX header to my coordinate from my OPUS solution. We can adjust our processing settings if we need to fine tune the output of our trajectory. Then Save and click Process. We should see a high percentage of fix in the rover trajectory. We can then drop in the CSV with our points, select acceptable solutions for them, and correct them. Let’s input the corrected CSV and compare that to my original points. As expected, we can see there is a consistent shift on our RTK points. More importantly, even our points collected with single solutions are now lining up with the northeast corner of the catch basins.