NAVIS NavDP 4000. Operation Manual
Figure 8.20: The GPS parameters window. Standard view
Figure 8.21: GPS parameters with the side view
8.8.5.2
DGPS Parameters
The GPS parameters window contains the scheme of the GPS antenna location on the vessel (see. figure 8.20).
An additional side view of the vessel is displayed in some configurations (see figure 8.21).
Press the softkey on Navigation bar to display parameters window of the selected GPS
Location
denotes a position of GPS antenna.
NOTE!
The system is highly sensitive to these data; it’s needed to specify them
attentively. Coordinates are given relative to a midship frame.
Positive directions correspond to specified directions.
For example, if GPS is placed in aft part — Ahead coordinate will be negative.
For the sensor at portboard, coordinate STBD is negative.
Up — is calculated from a waterline.
Weight
is a relative weight of the sensor at calculating of a ship position. It can be Low, High, and Auto. Use Auto, if
you want the sensors have weight, proportional to noise level. In any cases it’s reasonable to increase the weight of
relative sensors, or to choose exactly “correct” or “incorrect” (a priori less or more precision sensor).
Accuracy
is a priori dynamic accuracy of sensor (standard deviation, m). Accuracy parameter is used for ref-systems
median test.
GPS Mode
- work only in the mode with correction (Diff, WAAS, Float RTK, etc.) or it’s possible to work without
correction (available Standard Positioning Service (SPS) GPS mode) — Ignore.
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Doc. 000.JDP-10000-OME, rev.3.3.13/“2102.$–17A-Advanced”
