Furuno GP-1600F - Manual (Page 73)

5 – 5
5
6
6"
4
4"
2
2"
0
1
3"
3
5"
Delay because
of smoothing
SMOOTHING SETTING OF 3
New
position Previous
position
Current position
(3/16)
1
: Track with no smoothing (raw position data)
: Track with smoothing
1"
Smoothing
factor 16
1"
Figure 5-6 Comparing track with smoothing and no smoothing
For instance, number 03 provides a weighting factor of 13/16 for
new data and 3/16 for previous data. The higher the smoothing,
the slower the position updates becomes. In the following figure,
the track shown by the broken line has a time delay more than the
one shown by the dot-dash line, because of higher smoothing.
: Track with no smoothing
: Track with smoothing of 12/16
: Track with smoothing of 14/16
Ship's track
Figure 5-7 Comparing track and different smoothing factors
SPEED AVERAGE: Calculation of ETA and TTG, etc. is based
on an average ship’s speed over a given period. If the period is too
long and the ship’s speed is changed suddenly, calculation error
will result. The default setting is 001. Increase the setting if time
calculations are in error.