> For the complete documentation index, see [llms.txt](https://docs.phoenixlidar.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.phoenixlidar.com/spatialexplorer-8-and-9/user-interface/windows/project/reference-stations/computing-positions.md).

# Computing Positions

SpatialExplorer can compute position automatically using either **LiDARMill** or **InertialExplorer**. If you have a NavLab Embedded license, use the **InertialExplorer** option (most common).

### Computing PPP Position with InertialExplorer

If you have a NavLab Embedded license, you can compute a reference station position using **InertialExplorer**:

<figure><img src="https://2222094320-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FdEevfLZRIk38LUPwDa4V%2Fuploads%2FvMmMiOEnhmR927mcMejD%2Fimage.png?alt=media&amp;token=21c6d9a6-be4a-45a3-a3ba-7ac42f372f38" alt=""><figcaption></figcaption></figure>

This will compute a position from the raw reference station data, using precise orbit and clock files from NovAtel. Typically PPP positions have a vertical accuracy around 3 - 10 cm, depending on your geographic region.&#x20;