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6 operational notes – Triton Isis User Manual

Page 242

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June 2004 Isis® Sonar User's Manual, Volume1

228

Figure 9-29: Typical ASCII file generated by Subbottom Picking and

Tracking

9.14.6 Operational

Notes

• You must have only one channel displayed in the window on which SBP

is being performed.

• You can use the Digitize Lines and Polygon function in conjunction with

subbottom-tracking to generate both layer and feature lists.

• Don’t enlarge or shrink size of the subbottom data window while

performing SBP. Isis may get confused about which data needs to be
written to the output file. You can, however, freely use Delay and
Duration
to keep the data enlarged in the window.

• Don’t use Speed Correct in the subbottom window.
• Using SBP simultaneously from several windows has not been tested.
• You can instruct Isis to correct the display of any subbottom channel for

variations in towfish depth. Refer to

8.2, ‘Depth Delay and

Duration,’

for details.

Chapter 9: Using the Tools Menu