Specifications

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During the kinematic data collection, the receiver must main-
tain lock on at least 5 satellites which are common at both the
base and rover stations.
If the receiver detects that less than 5 satellites are tracked,
it will send out an alarm indicating that the system must be
re-initialized.
In cases of loss of lock due to obstructions, it is possible that
the accuracy of processed results will be degraded if re-initial-
ization is not performed in the field. Therefore, re-initializa-
tion in the field after a loss of lock is critical to maintaining
survey accuracy.
Finally, kinematic surveys are most successful when the kine-
matic base receiver is close to the kinematic rover. Accuracies
of GPS-derived positions are distance-dependent. The greater
the distance between the GPS receivers, the larger the uncer
-
tainty.
In an ideal case, the kinematic base should be on the same
project site as the kinematic rover. Kinematic surveys with a
separation of more than 10 kilometers (6 miles) between the
kinematic base and rover should be avoided. Such a separa
-
tion makes kinematic initialization more difficult, increasing
the chances of poor results.
When performing a kinematic survey, ProMark3 provides you
with the tools to perform the following tasks:
• Manage data files in the GPS receiver
• Enter pertinent survey point attribute information required
for data processing
• Monitor the progress of the kinematic survey.