User's Manual

Using GPS
GeoExplorer 2005 Series Getting Started Guide 25
Configuring GPS settings
Use the GPS Settings form in the GPS Controller software to configure
the settings you require for GPS positions.
To open the GPS Settings form, do one of the following:
• Tap GPS Settings in the Setup section.
• Tap in the Skyplot, Satellite Info, or Plan section.
Selecting predefined settings using the GPS slider
Use the GPS slider to select predefined settings.
To use the slider, select the slider check box. The slider control
appears on the GPS slider, and some fields in the form become
read-only. The values in these fields change as the slider control
position changes.
Drag the slider control to the left to decrease the GPS precision and
include more satellites in GPS position calculations. Drag it to the
right to increase the GPS precision and exclude satellites that do not
meet the precision requirements from GPS position calculations. For
more information, see Factors that affect accuracy, page 30.
Selecting custom GPS settings
To select custom GPS settings, clear the slider check box. The slider
control disappears from the GPS slider, and the remaining fields
change to editable numeric fields. To specify the required GPS
settings, enter values in these fields.
Configuring velocity filtering
You can use velocity filtering to smooth GPS positions when
collecting lines or areas in high multipath environments. To apply
velocity filtering, you must:
1. Configure Velocity Filtering to Auto on the GPS Settings form.
2. Use real-time corrections, or collect data with SuperCorrect set to
On in the TerraSync software or GPScorrect extension.