Trimble Inc. 66400 Manuel D’Utilisation
5 Using the GPS receiver
64 Juno Series User Guide
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
collect data. For more information about how real-time differential GPS works, see
Using SBAS corrections
The Juno series handheld has an integrated receiver that uses Satellite Based
Augmentation Systems (SBAS) correction messages to improve the accuracy and
integrity of GPS data.
Augmentation Systems (SBAS) correction messages to improve the accuracy and
integrity of GPS data.
The SBAS tracking mode is Auto. In Auto mode, the receiver tracks or locks onto the
most powerful satellite signal. The GPS receiver can track two SBAS satellites at the
same time in Auto mode. It uses corrections from only one SBAS satellite at a time, but
tracking two satellites can improve the availability of SBAS real-time corrections. For
example, if you are working in environments where obstacles may block the direct line
of sight to the SBAS satellite, there is less chance of signal loss if you are tracking more
than one SBAS satellite.The receiver tracks SBAS satellites according to your
geographical location:
most powerful satellite signal. The GPS receiver can track two SBAS satellites at the
same time in Auto mode. It uses corrections from only one SBAS satellite at a time, but
tracking two satellites can improve the availability of SBAS real-time corrections. For
example, if you are working in environments where obstacles may block the direct line
of sight to the SBAS satellite, there is less chance of signal loss if you are tracking more
than one SBAS satellite.The receiver tracks SBAS satellites according to your
geographical location:
•
Wide Area Augmentation System (WAAS) satellites are tracked in the
Continental United States including Alaska, and parts of Canada and Mexico.
Continental United States including Alaska, and parts of Canada and Mexico.
•
European Geostationary Navigation Overlay Service (EGNOS) satellites are
tracked in Europe.
tracked in Europe.
•
MTSAT Satellite-based Augmentation System (MSAS) satellites are tracked in
Japan.
Japan.
Note –
If you have other Trimble GPS field software installed, configure real-time
correction settings in that application instead of the GPS Controller software.
To use SBAS corrections:
1.
In the GPS field software, open the Real-time
section and tap the
section and tap the
Setup
button .
2.
In the Choice 1 field, select Integrated SBAS.
3.
In the Choice 2 field, specify whether to use
uncorrected positions, or to stop using GPS
positions, if corrections are not available.
uncorrected positions, or to stop using GPS
positions, if corrections are not available.
4.
Tap
OK.