Take It Outdoors
GeoData Center maintains equipment for and expertise in collecting spatially accurate, high quality data in the field including GPS and surveying instruments. Careful planning and the right tools are essential to any field based study.
A classroom set (20 units) of Trimble Juno 3B professional GPS units is available for courses or to check out individually for course projects, directed studies or research activities. All units have Trimble TerraSync software installed and many also have ESRI ArcPad, though TerraSync is generally recommended except for users with prior ArcPad experience.
Trimble Pathfinder Office is available in the GIS Laboratory for mission planning, data dictionary creation, data retrieval, and performing post-processing corrections.
Other GPS devices and accessories available:
- Trimble Pro-XR (older backpack style unit) GPS with real time differential
- Thales MobileMapper CE with ArcPad and real-time differential beacon (PDF specs)
- External antenna and pole for Juno or Thales units
- Garmin recreation-grade GPS
- GPS enabled digital still and video cameras (see page)
Additional equipment available through the GeoData Center and the Dept of Environmental Studies includes:
- Sokkia total station
- Manual Surveyor's Levels
- Metric and US stadia rods
- Surveyor Wheel
Tutorials and resources for Trimble Junos
- Trimble Juno 3 Series User Guide |Quick Start Card
- Terrasync Getting Started Guide | Quick Reference Card
- Pathfinder Office Getting Started Guide
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 http://youtu.be/i7WQocsPVEQ (embedding not permitted).
The longer video below may help with some more advanced functions.