> 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="/files/Oz99mtX3sXdUE1Bnr8Mx" 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;