Triton Isis - Manual (Page 73)

June 2004 Isis® Sonar User's Manual, Volume 1 59
Chapter 4 Setting Up Isis To Record Data
Setting up Isis to record data involves working with three types of information:
• choosing an ensonifying device and identifying it to Isis
• choosing appropriate serial ports that Isis will used to get specific
navigation data
• choosing a file format in which Isis will save your data
Isis needs to know the parameters for all three of these areas in order to
be able to record successfully. All three areas are accessed from
File→Record Setup… on the main menu.
4.1 Sonar Setup
In Sonar Setup (from the main menu: File→Record Setup→Sonar Setup), you
configure Isis to work with a specific brand of sonar chosen from a list of side-
scan sonar or multibeam brands. Part of the setup is to specify the sonar’s beam
width and frequency, whatever brand of sonar will be used. Frequency is only
displayed and stored. It is not part of any equation in Isis. The sonar beam widths
are used in measuring the length of objects in the Target utility (to compensate
for beam spread which causes small objects to be stretched along-track) and
beam pattern compensation (to compute the angle for boresite). The Isis
software program itself is completely passive and provides no control over the
sonar. Thus, all values set in Sonar Setup should only indicate the sonar’s
current setting.
Even though Isis is passive with respect to direct control over a sonar, Isis can,
for certain kinds of sonar, use special control programs to indirectly augment the
control over sonars that Isis lacks directly. Prominent among these server control
programs are server control programs that Triton Elics makes for the SIS-1000,
DF_-1000 and SeaBat 900x sonars. In most cases, when you activate Record
mode in Isis, Isis will run a corresponding sonar control program for the sonar
selected in Isis. For more about these interactions of Isis to various sonars, see
‘Working With Specific Sonars’ in Appendix I (Isis User’s Manual, Volume
2).
Isis usually acquires sidescan and subbottom data from the DSP board in the Isis
system. Multibeam bathymetry is acquired via a serial port.
Chapter4: Setting Up Isis to Record Data