Page 59 of 68
Doc. P/N:
WSP-009-002
Version: V2.3
Issue Date: July 2014
Installation Manual
www.wassp.com
Sea Trial - Commissioning Step 16 : Not Recommended Patch Tests:
If and only if a high accuracy e.g. RTK or inertial aided GPS are installed and high
quality motion sensors are installed it may be possible to improve the systems
performance by performing a pitch and heading patch test. Because these tests
are not recommended for 99% of operators of the WASSP Fishing system they
can be found at the end of this manual.
Sea Trial - Commissioning Step 17 : Setting Sidescan Gain Limit:
Adjust the Sidescan Gain and Sidescan Gain Threshold to a level that shows good
sea-floor definition.
The Sidescan Gain control can be varied at any time. Changing the Sidescan
Gain Threshold will cause a big step in the Sidescan and the old data will not be
reprocessed to conform to this gain change.
Figure 38 – Sidescan Gain Setting Box
Sidescan gain
threshold
limit
Sidescan gain
adjust slider
Note: Recommended Gain
Threshold Setting for the
Sidescan is 70. The Opera-
tor may change this to adjust
the sensitivity of the Sides-
can. Choose values that are
between 60 and 90.
Sea Trial - Commissioning Step 18 : Check Backscatter Levels
The Backscatter threshold may be able to be modified to allow the WASSP system
to conform better to previous backscatter mapping. Otherwise there is no need to
adjust the backscatter threshold settings.
Over time the Backscatter across swath variations should even out so that real
backscatter features will be clearly visible.
