Raven Envizio Pro, Инструкция по установке и эксплуатации

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Chapter 7
126 Envizio Pro™ and Envizio Pro II® Installation and Operation Manual
SBAS (Satellite Based Augmentation System)
Note:
Some Envizio Pro field computers may have an internal receiver enabled for e-Dif and L-Dif only.
These receivers do not have an SBAS option and will not be able to utilize SBAS correction
signals.
Select the SBAS option to utilize the Wide Area Augmentation System (WAAS) or European Geostationary
Navigation Overlay Service (EGNOS) correction signals. For most internal GPS receivers, this is the default
option selected.
PRN (Pseudo-Random Number). The PRN scroll list allows the operator to manually set the PRN, or pseudo-
random number, for the differential satellite which provides coverage for the operation area if desired.
Selecting a PRN from the list locks the correction signal to the selected satellite. If the ‘auto’ option is
selected, the field computer will scan and automatically set the PRN throughout an operation.
GL1DE Smoothing. Toggle the “GL1DE Enabled” option to enable the NovAtel GL1DE
®
algorithm while using
SBAS corrections. When enabled, the NovAtel GL1DE\ feature helps to smooth reported GPS positions
and reduce position jumps during operation and provides for a more stable position input for guidance
systems.
Note:
The NovAtel GL1DE feature is only available on Envizio Pro II field computers with the dual
frequency GPS receiver. Visit the NovAtel web site for a full description and additional information
on the NovAtel GL1DE feature.
www.novatel.com
GLONASS Authorization. An optional Global Navigation Satellite System (GLONASS) authorization key is
also available to enhance the standard GPS satellite constellation. This key allows the dual frequency
receiver to utilize the GLONASS satellite constellation which can increase the number of satellites visible at
any given time and help improve satellite coverage.
Note:
The GLONASS satellites will be utilized when the internal receiver is configured for the following
correction sources:
•
GL1DE Only
•
RTK using RTCM v 3.0
•
OmniSTAR G2
•
Satellite GS or Slingshot GS
e-Dif (Envizio Pro Only)
If an optional e-Dif key has been authorized, an option to enable e-Dif will be displayed on this screen. Select
the e-Dif option to display the timer for the last time the e-Dif was reset. Touch the Reset button to reset the
timer.
Note:
The Envizio Pro internal DGPS receiver is e-Dif capable. If connecting an external receiver to the
Envizio Pro console, make sure that it is capable of using e-Dif prior to purchasing or authorizing
an e-Dif code.
Contact a local Raven dealer for more information about the optional e-Dif correction source and
upgrades.