Triton Bathymetry - Manual (Page 16)

Page 12
4.3 Navigation
There are two important things that happen as the raw data is imported into Perspective.
The first is the creation of cache files for each imported line. This allows the original
data files to be unchanged during all the processing steps performed. The other is the
extraction of the navigation data from the raw data files for display in the map view.
Perspective uses a GIS-like file tree structure for managing
imported data as shown to the right. The extracted navigation
is placed in the Navigation file tree node, separated into
different types depending on the data present in the raw data.
For example, navigation from an interferometric sonar or a
Reson multibeam sonar with will be split into three parts; one
for the vessel position, one for the sidescan navigation and
another for the bathymetry navigation. Although the raw
navigation for the sidescan and bathymetry from combined
sonars are identical, this is important as it allows for the
navigation to be processed differently.
Navigation processing is a very important step for accurately
determining the position of each sounding. In Perspective the
navigation can be processed from the file tree allowing the
user to monitor the effects of processing using beamlines, or
the navigation can be processed inside the BathyOne wizard if
the user is familiar with the dataset and knows what settings
to use. See Triton’s
Perspective - Navigation Processing Guide
for more information.
4.4 Import Processing Option
Upon importing the raw data file, the
dialog shown below is by default set to
pop-up asking if you would like to
process the data at this time. Options include
Skip for processing later, Use Wizard will
launch the processing wizard, and Use Previous Settings will process the data using the
parameters set the previous time using the wizard and only asks for a file name.