Not just sitting at a computer

Geo is about modeling the world around us. To be effective we often have to go outside to make measurements and collect data ourselves. GeoData Center maintains equipment to create spatially accurate data.

Trimble Juno


GeoData Center maintains a classroom set (20 units) of Trimble Juno 3B professional GPS units with TerraSync software installed. These units may be used for courses or checked out for individual projects. ESRI ArcPad (v10.1) is also installed on some units, but is generally not recommended except for users with ArcPad experience.

Trimble Pathfinder Office is available in the GIS Laboratory for mission planning, exporting, and performing post-processing corrections to GPS collected data.

Additional equipment available through the GeoData Center and the Dept of Environmental Studies include a Sokkia total survey station, a Trimble Pro XR (backpack-style) GPS, and an ArcPad-running Thales GPS/mobile GIS with real-time differential beacon.

Tutorials and resources for Trimble Junos

Mission Planning: Creating a Data Dictionary

If you are mapping multiple types of features or will be collecting attributes with your features, it is strongly advisable to create a data dictionary in the Lab before going out to the field.

Downloading data to a computer and post processing

After finishing in the field you will need to transfer the data from the Trimble to a computer. Once downloaded, it is recommended that you post-process your features using differential correction to get improved positional accuracy.

Exporting features to a Shapefile for ArcGIS

In newer versions this simple conversion can get a bit tricky. This short video will walk you though creating a shapefile with proper referencing information from collected GPS features in Trimble Pathfinder.

Using Terrasync software in the field

With proper preparation, using the Juno's Terrasync software in the field is relatively easy and intuitive.  

Short field document for printing.

Walkthrough from KCL Geography (embedding not permitted).

The longer video below may help with some more advanced functions.