Technical Description
Man_techn_seapath320/rev.1
43
4.4.2.2
GNSS Processing
For operations with weak satellite geometry the position output can be made more
accurate by using height aiding and low elevation mask. For normal operations the
Height Aiding mode is set to Off but Filter is also recommended used. The elevation
mask is set to 10 degrees as the default value and must not be changed by other than
experts. For the Seapath 310 and 330 models the search mode for the RTK solution has
three selections: Safe, Normal and Fast. The default RTK search mode is Normal. In
order to change the default GNSS Processing settings, proceed as follows:
•
Set the Seapath in Height Aiding mode by pulling down the Aid Mode drop-down
list and change the selection from Off, which is the default setting, to Filter. The
Aided Height is for the NRP and measured above the ellipsoid. This height should be
set when Filter is selected since the filter will start with the entered height value as
the initial value.
•
The SV masking value can be changed from the default value 10 by entering an
Elevation mask value between 7 and 20 degrees. This value must not be changed by
other than experts from the default value 10.
•
Click the checkbox
Enable range rate corrections
to use the DGNSS corrections in
the GNSS velocity calculations. The default setting is enabled on use of range rate
corrections. Disabling range rate corrections will reduce velocity and attitude noise
when receiving DGNSS corrections from a reference station with a noisy range rate.
•
For the Seapath 310 and 330 models the search mode for the RTK solution should be
changed from the default mode Normal to Safe or Fast by pulling down the
RTK
search mode
drop-down list. The Safe mode is recommended used under difficult
conditions with much multipath or ionospheric activity and for long baselines. The
Fast mode is used when a fast RTK solution is required. However, in this mode the
probability for an incorrect solution from the system increases.
Figure 23 GNSS Processing settings view
Summary of Contents for Seapath 320
Page 1: ...Seapath 320 Technical Description ...
Page 22: ...Seapath 320 8 Man_techn_seapath320 rev 1 ...
Page 42: ...Seapath 320 28 Man_techn_seapath320 rev 1 ...
Page 50: ...Seapath 320 36 Man_techn_seapath320 rev 1 ...
Page 86: ...Seapath 320 72 Man_techn_seapath320 rev 1 6 1 Processing and HMI Units ...
Page 87: ...Technical Description Man_techn_seapath320 rev 1 73 ...
Page 88: ...Seapath 320 74 Man_techn_seapath320 rev 1 6 2 Antenna bracket ...
Page 89: ...Technical Description Man_techn_seapath320 rev 1 75 6 3 MRU and mounting bracket ...
Page 90: ...Seapath 320 76 Man_techn_seapath320 rev 1 ...
Page 91: ...Technical Description Man_techn_seapath320 rev 1 77 6 4 MRU junction box ...
Page 95: ...Technical Description Man_techn_seapath320 rev 1 81 6 7 6 U cabinet dimensions ...
Page 96: ...Seapath 320 82 Man_techn_seapath320 rev 1 ...
