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Juno ST Handheld User Guide 49
Using GPS 5
Factors that affect the accuracy of postprocessed DGPS include the type of receiver
and antenna used at the reference station, the distance between the reference station
and the location where the rover data was collected, the accuracy of the reference
station position, and the logging interval at the reference station.
For more information, refer to the documentation provided with your postprocessing
software.
Postprocessed real-time DGPS
Postprocessed DGPS positions are generally more accurate than DGPS positions
obtained in real time. To improve the accuracy of your collected GPS data, you can
postprocess your files using version 4.00 of the GPS Pathfinder Office software or
version 2.10 of the Trimble GPS Analyst extension for ESRI ArcGIS software, if you
collect GPS positions using any of the following:
• version 3.01 or later of the TerraSync software
• version 2.20 or later of the Trimble GPScorrect extension for ESRI ArcPad
software
• an application developed using version 2.20 or later of the GPS Pathfinder Tools
SDK
Note – For more information about GPS and DGPS, go to www.trimble.com/gps and
review the All About GPS tutorial.
Supported GPS field software
You can use the Juno ST handheld with any of the software products described below.
TerraSync software
You can install version 3.01 or later of the TerraSync software on a Juno ST handheld.
Use the software to collect and maintain GIS and GPS data.
To install the TerraSync software, either insert the TerraSync Software CD in the
CD-ROM drive of a computer and use the menus provided, or run the downloaded
setup file. To obtain an installation code for installation, you must register your copy of
the software online. Detailed installation instructions are provided in the TerraSync
Software Getting Started Guide.
ESRI ArcPad software and the Trimble GPScorrect extension
You can install version 7.0.1 or later of the ESRI ArcPad software on a Juno ST
handheld. Use the software to collect and maintain GIS and GPS data. Detailed
installation instructions for ESRI ArcPad are provided in the ArcPad documentation.