
76
Promark2 User’s Guide
the
Survey Status
screen, Figure 3.40.
The
Survey Status
screen provides information on the status of your survey during
the data collection period. Information presented here will help you determine when
enough data has been collected during this observation to ensure a quality position
when the data is later processed. From this screen, monitor the following observation
quality indicators:
• Observation Timer
The Obs. Timer field displays the current state of the observation timer. The
Observation Timer examines the collected satellite data to estimate when enough
data has been collected to ensure a quality position when the data is processed. To
make this determination, the observation timer takes into account the number of
satellites observed during the observation session, the geometry of the satellites
(PDOP), and breaks in the continuous tracking of the satellites caused by
obstructions. Using this information, the observation timer informs you when
enough data has been collected for different distances between you and other
receivers simultaneously collecting data, i.e., vector lengths. The possible
displayed distance thresholds are as follows:
0 KM
(0 MI) - displays when there has not been enough data collected to
accurately process a vector between this receiver and others simultaneously
collecting data.
5 KM
(3MI) - displays when there has been enough data collected to process a
vector between this receiver and any other receiver simultaneously collecting data
within 5 KM (3 MI) of this receiver.
Figure 3.40
Survey Status Screen
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