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If you set the checkbox Use old ref. coordinates to ON and then launch RTK, the
rover receiver immediately starts using the existing reference coordinates in place of expecting
when the reference station transmits some updated reference coordinates to the rover side.
The checkbox relates to the receiver parameter /par/pos/pd/ref/keep.
Care should be taken when setting this parameter to ON. Imagine for a moment
that the rover has changed the location and started a new RTK session with a dif-
ferent reference station. Should this parameter be set to ON, the rover receiver
will be misusing the
old
reference coordinates for some time, which will most
likely result in position blunders until the rover receives a first message with the
correct reference coordinates.
The list box Source serves to specify the source (port) from which the receiver will use differen-
tial data for position computation in RTK mode. This list box is associated with the receiver parame-
ter /par/pos/pd/port.
CMR Settings
With the GLONASS message spin box the user assigns the message type for GLONASS meas-
urements. Make sure that both the reference station and rover receiver use the same message type
for GLONASS measurement data. The spin button is associated with the receiver parameter
/par/cmr/rover/glo/type.
Press the Reset RTK Engine button to reset the RTK engine. It means that all of the previ-
ously obtained estimates (estimated position, variance-covariance matrix, etc.) will be thrown away
and the RTK engine will then start “from scratch”. The button corresponds to the receiver parame-
ter /par/pos/pd/reset.
To access the tab allowing you to revise and edit port settings, either click the Ports tab, or press
the Configuration of Receiver Ports button.
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