Doc. P/N:
WSP-009-005
Version: V1.5
Issue Date:
October 2013
www.wassp.com
Page 54 of 73
Installation Manual
10.2.5 Sea Trial - Commissioning Step 12: Beam Width Reduction
The usable area of the swath may be limited due to reduced beam width caused by low
temperatures, turbulent flow, aeration, high sea state, quick temperature fluctuations or shading of
the transducer.
Watch the outer edges of the
Sonar View
carefully with the seafloor line shown. If the outside
edges of the seafloor line appear to vary much more than the area immediately adjacent, consider
reducing the beam width.
These variances can be seen as frilly edges at the side of the swath on the
Waterfall
View
and
as perpetually weak echoes on the outer beams on the
Sonar
display. Failure to reduce the beam
width will introduce false data on the outer edges into the backscatter and depth maps.
To reduce the beam width:
On the
Menu Task Bar
, click on the
Ship Setup Options
, and open the
Processing Tab
.
Adjust the
Beam Width
using the
Port
and
Starboard
controls.
1
2
Port Controls
Starboard Controls
Frilly edges will appear on the Waterfall View outer 5 degrees
of each side of the mapped track caused by low temperature
environment. To remove this area we can reduce the beam
width on both port and starboard by 5 degrees.
