Triton Sidescan - Manual (Page 17)

Page 14
5.1.5 Line and Channel Settings
This page of the wizard is for
settings that apply on the individual
survey lines before they are
assembled into a mosaic.
 Select Channel
port and starboard channels
can be selected or turned
off.
 Clip Channel Ground Range
o
User Defined: These
slider bars set the
amount of clipping to perform in either percentage or in meters. The outer
boundary can be set by clipping the maximum range or by setting the
maximum distance to use from the nadir position.
o
Clip based on Altitude: Limits the ground range based on the percentage of
the sonar altitude. According to NOAA specifications, the sonar altitude
needs to be within 8 to 20% of the ground range for the data to be
acceptable.
 Fill Options
There are two primary fill methods which can be used separately or together.
1. Between Pings - Fills along track data gaps resulting from too fast a vessel
speed for the set ping rate .
2. Grid - Fill option based on values of adjacent cells generally used for
multibeam amplitude data and not true sidescan that has more than enough
sample across track already compared to the along track direction. Options
for the Grid method include:
 Grid Fill Dimensions - for the Grid method, can set the number of cells
to fill from the closest known value.