User's Manual
Table Of Contents
- GeoExplorer® 6000 series
- Legal Notices
- Safety Information
- Contents
- Introduction
- Getting Started
- Using the Windows Mobile Operating System
- Connecting to an Office Computer
- Using the GNSS Receiver
- Supported GNSS field software
- Configuring the GNSS field software to connect to the receiver
- Using the GNSS field software
- Improving GNSS productivity using Floodlight satellite shadow reduction technology
- Ensuring the accuracy of your GNSS data
- Activating the Floodlight technology and the NMEA output options
- Differential GNSS explained
- Outputting NMEA data to external equipment
- Configuring NMEA output
- Getting Connected
- Wireless connection information
- Connecting to a cellular network from the modem
- Connecting to a Wi-Fi access point
- Connecting to a Bluetooth-enabled device
- Connecting to a Bluetooth device as a client
- Providing Bluetooth services as a host
- Setting up a Bluetooth connection
- Connecting to a Bluetooth-enabled phone for Internet access or real-time corrections (including VRS networks)
- Connecting to the Internet through a Bluetooth-enabled phone using the Bluetooth PAN profile
- Connecting to a Bluetooth-enabled serial device
- Connecting to an office computer using Bluetooth wireless technology
- Outputting GNSS data to other devices using Bluetooth wireless technology
- Enabling other devices to transfer files using Bluetooth wireless technology
- Beaming files to or from another device
- Accessing a corporate network through your Internet connection
- Connecting to other devices using the USB to serial converter
- Using the Camera
- Troubleshooting
GeoExplorer 6000 Series User Guide 67
Using the GNSS Receiver 5
Ensuring the accuracy of your GNSS data
GeoExplorer 6000 series handhelds are high performance GNSS receivers that
calculate very accurate GNSS positions.
To correct errors in the collected data and to further improve the accuracy of the GNSS
positions, use differential GNSS. Differential GNSS (DGNSS) requires one or more
additional receivers, called base stations or reference stations, which are located at
known points. Data collected at the base stations is used to determine GNSS
measurement errors and compute corrections to these errors. These corrections are
then applied to data collected in the field either in real time or during postprocessing.
For more information, see Differential GNSS explained, page 75.
The different models in the GeoExplorer 6000 series offer two levels of DGNSS
accuracy:
• The GeoXT handheld uses EVEREST multipath rejection technology to provide
< 1 meter accuracy with real-time or < 0.5 meters postprocessed differential
correction.
• The GeoXH handheld uses EVEREST multipath rejection technology as well as
H-Star technology to provide 10 cm accuracy with real-time or postprocessed
differential correction.
For more information, refer to the datasheet for your model of handheld.
Where the DGNSS infrastructure does not meet 10 cm accuracy requirements
( for example, the base station provides L1 corrections only, or is at a distance
greater than recommended), the GeoXH handheld typically achieves submeter
accuracy.
The list below identifies the most important settings and techniques that you can use
in the field to improve the accuracy of your data:
Note – This list assumes that you are using Trimble GNSS field software, and lists items in
order of most important to less important.
1. If you are using the TerraSync software to collect data, use accuracy-based
logging. For more information, see page 68.
2. Use real-time differential corrections. If you are using a GeoXH handheld and
have access to dual-frequency corrections from a VRS
™
network, use the
corrections from the VRS network. For more information, see page 69.
3. Configure the GNSS settings for the receiver to use Smart Settings to increase
the precision of your data, and to minimize the effect of atmospheric
interference and poor satellite geometry. For more information, see Using Smart
Settings, page 71.
4. Connect to an external antenna, if you have one. For more information,
see page 73.
5. Plan GNSS data collection around the times of the day when satellite geometry
is best. For more information, see page 74.