In Emlid Studio Stop and Go, you can manually input base station position coordinates after separately correcting the positions using RINEX output with a PPP service (NRCAN or OPUS). This can then be used in later post-processing of points collected with a rover in Emlid Studio Stop and Go.
I have the following questions:
[1] Is this input position meant to be at the marker position (e.g. ground surface) or at the top of the antenna?
[2] If this base position input is intended to be the ground surface, should the antenna height and pole height be toggled and specified?
Just trying to figure out what the software is doing/expecting with the input points as it relates to antenna and pole heights.
Usually, it’s the point on the ground, as the antenna height is set among the log recording settings or on the OPUS upload page.
After loading the file into Emlid Studio, you’ll see the following under the base’s coordinates, as the software automatically reads the antenna height from the RINEX header.
After that, you’re good to proceed with the post-processing.
Hi Kornel. Thanks for the response. It’s helpful.
Couple comments:
[1] We actually didn’t set the pole height in the log recoding settings for the base station. This is something we will change in the future workflows but at the time of our points we didn’t.
[2] Because of [1] our NRCAN PPP correction hasn’t taken into consideration the pole height (though it did include antenna height). We did however measure the pole height and used it to bring our PPP corrected point to the ground surface manually before inputting into Emlid Studio.
[3] The remaining question for us was basically assuming the input point was the ground surface position, did we need to specify the pole height like you showed there. It sounds like we still have to specify that height based on your response if I am understanding you correctly?
In terms of [3] I guess my assumption is they need the pole height despite having a ground surface height already input so that correction can be done for the potential differences in pole height from the base vs rover?
In this case, you obtained the coordinates of the antenna reference point (ARP), so the bottom of the receiver.
It was a good idea to calculate it, as you now have the coordinates of the point on the ground.
Yes, you’re right. After uploading this .24O file into Emlid Studio, the software will show 0 m as antenna height, according to the RINEX header. So, make sure to change it manually to the actual antenna height after clicking on Edit.
