User's Manual Part 2

5 Using the GPS receiver
68 GeoExplorer 2008 Series User Guide
– Select In the field to use the current estimated accuracy (recommended if
you are using a real-time correction source), or select Postprocessed to use
the predicted estimated accuracy that will be achieved after the field data
has been postprocessed.
4. If you selected Postprocessed, select the estimated distance to the base station
that will be used for postprocessing from the Postprocessing Base Distance field.
If you will use more than one base station (during H-Star processing), specify
the estimated distance to the closest base station.
5. Set the Use Accuracy-based Logging field to Yes. The settings fields for
accuracy-based logging appear.
6. In the Apply Accuracy-based Logging To field, select the feature types that you
want to log only if the GPS positions meet your required accuracy.
7. In the Required Accuracy field, select the estimated accuracy that is required
before GPS positions are logged.
8. Tap
OK.
Note – Accuracy settings do not affect GPS positions that are used for navigation. GPS
positions are still calculated by the GPS receiver and are available for navigation.
Connecting to a real-time differential correction source
Use a real-time differential GPS (DGPS) source to give you better accuracy as you
collect data. For more information about how real-time differential GPS works, see
Differential GPS explained, page 74.
Using real-time corrections from an Internet source
DGPS corrections are often broadcast over the Internet. For example, corrections
generated by a VRS network are commonly broadcast over an Internet server. A VRS
network uses data from several base stations to provide rover receivers with
corrections that are generally more accurate than corrections from a single base
station. Alternatively, you can connect to a server that provides DGPS corrections from
a single base station.
For information on how to connect to the Internet and receive real-time corrections
from an Internet server, see Connecting to a Bluetooth-enabled phone for Internet
access or real-time corrections (including VRS networks), page 88.