Javad TRIUMPH-1M, Руководство пользователя

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into its memory. The Rover receiver is set up at an
unknown point and collects data in static mode for
2 to 10 minutes. When finished, assign the Rover to
kinematic status and move to the next survey point.
At this point, and each subsequent point, the receiv-
er is changed to static mode to collect data. So, while
moving, the Rover is in kinematic mode, and while
collecting data, the Rover is in static mode.
• Set up the Rover at an unknown point and press
power. Allow the Rover to collect static data for
two to ten minutes. The REC LED will be yellow.
• Check the SAT light for satellites tracked.
• When finished, press the FN button for less than
1 second to assign the Rover to kinematic.
• Move the Rover to the next location (survey
point), and press the FN button for less than a sec-
ond to collect the data in static mode for two to ten
minutes.
• Repeat steps five and six until all points have
been surveyed. The occupation time for the points
depends on the same factors as for the static sur-
vey method.
• When finished, press the FN button for one to five
seconds to stop logging data. Turn off the Rover if
needed. This method of GNSS survey allows the
operator to reduce the point occupation time, thus
permitting field crews to survey many more points
compared to the other methods available.
Real Time Kinematic Surveying
With RTK surveying, as with kinematic surveying
described above, one receiver serves as the reference
station and conducts observations with its antenna
affixed to a stationary tripod or some other device.
The other receiver functions as a rover and conducts
observations (using an antenna) affixed to a mobile
pole and moved to observation points.
Unlike post-processed kinematic surveys, RTK sur-
veys utilize a communications link between the Base
and Rover. Using a radio modem link, the Base receiv-
er transmits its measurement and location data to
the Rover receiver. The Rover, based on the transmit-
ted data and its own observation data, immediately
conducts a baseline analysis and outputs the results.
Usually, the receiver will start to output the coor-
dinates of the antenna’s phase center along with the
solution type within 10–30 seconds. However, UHF ra-
dios and GSM phones may take as long as 60 seconds
to synchronize. The geodetic coordinates displayed
on the Location tab are always computed in WGS84
and have four solution types.
• Standalone – where the receiver computes 3D
coordinates in autonomous mode without using
differential corrections.
• Code differential – where the Rover receiver com-
putes the current relative coordinate in differential
mode using only pseudo ranges.
• RTK float – where the Rover receiver computes
the current relative coordinates in differential
mode using both pseudo ranges and phases; how-
ever, with a float solution, the phase ambiguity is
not a fixed integer number and the “float” estimate
is used instead.
• RTK fixed – where the Rover receiver computes
current relative coordinates, with ambiguity fixing,
in differential mode. The LQ field reflects the status
of the received differential messages and contains
the following information:
• Data link quality in percentage
• Time (in seconds) elapsed since the last re-
ceived message
• Total number of received correct messages
(dependent on the message type received)
• Total number of received corrupt messages
(dependent on the message type received)
• If the receiver is not (for some reason) receiv-
ing differential corrections, or if none of the
ports has been configured to receive differential
corrections, the LQ field will either be empty or
it will look like this: 100%(999,0000,0000).
RECEIVER AND FILE
MAINTENANCE
If post-processing the data after completing a mea-
suring, the data in the receiver’s memory will need
to be downloaded to a computer. Downloading and
deleting files will also prepare the receiver’s memory
for the next measuring. Occasionally, the receiver’s
NVRAM may need to be cleared to eliminate commu-
nication or tracking problems. As project expectations
expand, the receiver’s OAF may need to be updated
to provide expanded operation and functionality. The
receiver requires firmware to properly operate and
provide appropriate functionality. As JAVAD GNSS re-
leases firmware updates, loading these updates into
the receiver will ensure that the receiver operates at