Orthometric elevation and ellipsoidal height

[julia.shestakova]

Hi Jaime,

@ingelciv

The height in result file (32.5712 m) is an elipsoidal elevation, right?

Yep, since Emlid Studio provides ellipsoidal heights only. Agree with Javier on this.

This height is related to the same datum as your base. So if you used WGS84 coordinates of the base in processing, this height is in WGS84 as well.

@ingelciv

How I can obtain the orthometric elevation of my base point ? It is right to apply the aritmethic difference between both elevations in the raw csv file?

What orthometric height do you need? EGM2008?

I also second Javier on this. You can use Emlid Flow for the conversion. The workflow is described in this post.

@ingelciv

When I need to use the base point to make rtk, I have to place my base in RTK mode, Kinematic, and manual coordinates, and the elevation must be elipsoidal or othometric?

If you enter the position in the Base settings manually, then the height should be ellipsoidal. But it’s also possible to set the base using local coordinates and orthometric height. Check these posts to learn more about both ways:

• How to place the base on a point with known geographic coordinates and ellipsoidal height
• How to enter the base position in local coordinates