# GNSS Reference Station

### **GNSS Reference Station -** (CHC/DAT/T02/...)

GNSS Reference Station observations are used to perform Post-Processed Kinematic (PPK) GNSS data corrections, which is widely used in surveying and mapping to obtain high-precision positioning data or centimeter-level accuracy. 

Step 1: To upload a reference station file, click on "Reference Stations" under the SpatialExplorer Project window, then click on the folder icon at the bottom left next to "Tools"

![](/files/-M_7hpolEMhx9Qmrre4P)

Step 2:  Navigate to the GNSS reference station file, select it, and click "Open"

* The file name will be displayed below "Reference Stations" within the SpatialExplorer Project window


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